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Volume 20, Issue 1
Displaying 1-37 of 37 articles from this issue
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Kiyoji Fukunaga1965 Volume 20 Issue 1 Pages 1-7
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe angular dependence of the asymmetry of the polarized protons scattered from Be9 and Al27 have been measured. The data of the elastic scattering at the energy of 7 MeV for both nuclei, and 12 MeV for Be9 are consistent with other published data.
The asymmetry of 7 MeV protons inelastically scattered from Be9 which remained to the excited state of 2.43 MeV has an opposite sign of the elastic scattering, and the maximum asymmetry is about 35% at the angle of 50 degrees in the center of mass system.View full abstractDownload PDF (844K) -
Sadao Nakajima, Yuri Nakao1965 Volume 20 Issue 1 Pages 8-14
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSGorkov’s derivation of the Ginzburg-Landau equation from BCS theory is reformulated in such a form that one can apply it to dynamical processes involving quasiparticle excitations. As the simplest example, the method is applied to electron tunneling from an intrinsic hard superconductor in Abrikosov’s mixed state. It is shown that near the transition point one obtains the usual tunneling current simply averaged over Abrikosov’s distribution of energy gap. Some numerical estimates are made of the dependence of I-V characteristics on magnetic field in the case of Nb.View full abstractDownload PDF (924K) -
Taro Kihara, Naobumi Honda1965 Volume 20 Issue 1 Pages 15-19
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe general theory of van der Waals’ forces developed by Lifshitz, Dzyaloshinski and Pitayevski has been applied to forces acting on spheroidal particles in a liquid. Under the condition that the distance R is large compared to the dimensions of spheroids, the potential energy between two attractive spheroids takes its lowest value when their major axes are on a straight line.View full abstractDownload PDF (588K) -
D. J. W. Geldart, S. H. Vosko1965 Volume 20 Issue 1 Pages 20-25
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA detailed derivation of the expression for the renormalization constant Z for an interacting electron gas in lowest order in the effective interaction is given. It is clearly demonstrated that the result of Daniel and Vosko is correct in the high density limit, contrary to some recent work of Ôsaka. Numerical results are included for the renormalization constant.View full abstractDownload PDF (652K) -
Takeshi Takahashi, Masao Shimizu1965 Volume 20 Issue 1 Pages 26-35
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSMagnetic properties of Pd metal and Pd-Rh and Pd-Ag alloys with the addition of Co and Fe atoms are analyzed by the itinerant model of 4d-electrons. It is assumed that dissolved atoms have localized magnetic moments and are distributed at random. Spin quantum number of the localized moment of the dissolved atom and a molecular field coefficient between 4d-electron and dissolved atom are estimated from the comparison between our theory and experiments. The values of spin quantum number for localized magnetic moments are estimated as 1 and 3/2 for Co and Fe atoms in these alloys. Making use of these values and the value of molecular field coefficient among 4d-electrons and the density of states curve, which were obtained before for Pd metal, the composition dependences of the magnetic moment and the Curie temperature and the temperature dependences of paramagnetic susceptibility for these alloys are numerically calculated. The obtained results can explain almost all experiments satisfactorily.View full abstractDownload PDF (1232K) -
Kazuo Kanematsu1965 Volume 20 Issue 1 Pages 36-43
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe earlier diagram of β phase region is revised on the basis of x-ray and magnetic studies, and the existence of three phases β, η, κ is confirmed. The new β phase is homogeneous in a range from 32.8 to 40.0 at% Ge at 1050°C, η phase from 40.8 to 43.5 at% Ge at 800°C and κ phase has a narrow range of homogeneity at 43.5 at% Ge below about 500°C. Two phase region between β and η is very narrow. β Phase has a B82 (Ni2In) type of structure and is ferromagnetic. Alloy in the iron rich region of β phase is stable at high temperature and the quenched one precipitates a metastable phase with b. c. c. structure. η Phase is ferromagnetic and has a variant structure of B82 type. The structure of κ phase is still unknown and the magnetism is probably paramagnetic.View full abstractDownload PDF (960K) -
Takeo Hattori, Soitiro Tosima1965 Volume 20 Issue 1 Pages 44-48
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe effect of the self-magnetic field on the galvanomagnetic effects in bismuth was investigated using high current pulses at 77°K. Qualitative agreement between experiments and theory is obtained, using the Abeles and Meiboom model for the bismuth band structure.View full abstractDownload PDF (464K) -
Eijiro Haga1965 Volume 20 Issue 1 Pages 48-55
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSIt is shown that bound electron around donors make comparable contribution to the electric susceptibility as conduction carriers do when each concentration is comparable. The expression for the susceptibility is derived by calculating the expected value of the current density over the wave function of an impurity electron under an external field. The f-sum rule for an impurity state is derived and is applied to the analysis. The main term of the susceptibility is given by −NIe2⁄m*ω2, where NI is the concentration of impurity electrons and m* is the effective mass of the lowest conduction band. And the other contribution from the mixings of the wave functions of the lowest conduction band and the excited bound states is shown to be about a tenth of the above, for hω larger than a few times the impurity activation energy.
The contribution of conduction electrons to the susceptibility which arises from the presence of bound states is evaluated and it is shown to be negligible in ordinary cases.View full abstractDownload PDF (848K) -
Masatoshi Nakayama1965 Volume 20 Issue 1 Pages 56-61
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA general scheme to calculate the band structure of the deformed crystal in terms of the solution in the undeformed crystal is presented. A coordinate transformation is introduced to bring the deformed crystal to have the same periodicity as the undeformed crystal. The deformation potential Hamiltonian is defined in the transformed space and its symmetry property is discussed. Energy band of the deformed crystal defined in the deformed 1st Brilloun zone E(k) is obtained by substituting (1+ε+)k for k′ in the solution E′(k′) of the transformed system. This causes a new effect which exists even when the deformation potential effect vanishes (E′(k′)=E0(k′)). The strain-induced change of the local structure of the energy band is investigated by the k·p perturbation theory and is shown to be separated into two parts; the deformation potential effect at a fixed k point and the “scaling” effect. The latter is determined by the band structure of the undeformed crystal and the strain tensor. Expressions for the changes of the extremum point, of the effective mass tensor, and of the g-tensor are derived.View full abstractDownload PDF (760K) -
Kazuo Morigaki, Takeshi Mitsuma1965 Volume 20 Issue 1 Pages 62-76
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSVarious effects of uniaxial compressive stress on the electron spin resonance lines and related relaxation properties on phosphorus and antimony donors in Ge were investigated at liquid helium temperatures and at X-band. Besides general agreement with Wilson’s data several new results were obtained:
(1) The “one-valley” g-shifts were measured with stress applied along the [001] direction in a sample containing phosphorus of 1×1017/cm3. Two constants of the strain-induced spin Hamiltonian were determined experimentally by the aid of Nakayama’s theory.
(2) The spin-lattice relaxation times Ts were measured on the resolved hyperfine lines of phosphorus of 2×1015/cm3, and a substantial change of T1 with a large [111] stress was observed. Its magnitude was T1=1.1×10−2 sec for the stress of 6×108 dyne·cm−2 in agreement with Nakayama-Hasegawa’s estimation.
(3) The line width was measured as a function of the magnitude of stress, the donor concentration, temperatures, and the orientation of magnetic field. The results are discussed from a point of view of the impurity conduction phenomena.View full abstractDownload PDF (2188K) -
Akio Ohtsubo1965 Volume 20 Issue 1 Pages 76-81
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe adiabatic magnetization curves have been measured on single crystals of NiSiF6·6H2O and CuSiF6·6H2O using a Cioffi-type recording flux-meter. The specific heats have also been determined. Nickel fluosilicate was found to be ferromagnetic with the easy axis parallel to the c-axis. The magnetic Curie temperature is about 0.15°K while the specific heat maximum is at 0.135°K. The magnetic behaviour of copper fluosilicate is ferromagnetic and nearly isotropic. The magnetic Curie temperature is about 0.07°K. The entropy versus temperature curve has a kink at 0.10°K (at an entropy value of 0.46 R) showing the ordering in two steps. Weiss constants were determined at helium temperatures; θ⁄⁄−+0.15°K, θ⊥−+0.08°K for nickel salt; and θ(powder)=+0.07°±0.02°K, θ⁄⁄c=+0.08°±0.02°K, θ⊥c=0.05°±0.02°K, and g(powder)=2.25, g⁄⁄c=2.25, g⊥c=2.26(mean values) for copper salt.View full abstractDownload PDF (668K) -
Akio Ohtsubo1965 Volume 20 Issue 1 Pages 82-88
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSUsing a recording Flux-meter, adiabatic magnetization curves from initial fields of isothermal magnetization (maximum: 24K gauss) to zero have been measured on the hybrid column crystals of low temperature modification, parallel (⁄⁄) and perpendicular (⊥) to the hexagonal axis of the room temperature form. Both salts have been found to be antiferromagnetic with the preferred axis nearly along the (⁄⁄)-direction accompanying weak ferromagnetism with the tilt angle of about 1°. TN is 0.17°K for MnSiF66H2O, and 0.20°K for CoSiF66H2O, and the corresponding temperature of the specific heat maximum is 0.15°K for (Mn–) and 0.19°K for (Co–). The antiferromagnetic molecular field (HE) was observed to be 400 gauss for (Mn–), and 700 gauss for (Co–). From susceptibility measurements above 1°K, θ⁄⁄=+0.11°K, θ⊥=−0.12°K (Mn–); θ⁄⁄=−0.19°K, θ⊥=−0.15°K; g⁄⁄c=6.8, g⊥c=2.55 (mean values, not refered to the trigonal crystalline field) (Co–). The specific heat tail can be expressed as CMT2⁄R=5×10−2 (Mn–), 1.5×10−2 deg2(Co–). Considering the appearance of weak ferromagnetism, a proposed spin structure for the cobalt salt is that each dissimilar magnetic ion forms ferromagnetic sheets alternately along the hexagonal axis, each spin having four antiferromagnetic and two ferromagnetic neighbours.View full abstractDownload PDF (732K) -
Hiroshi Iwasaki, Makoto Hirabayashi, Shiro Ogawa1965 Volume 20 Issue 1 Pages 89-97
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSAu3Cd which is an ordered alloy with the one-dimensional regular anti-phase domain structure exhibits an asymmetry in intensity of components of each pair of split superlattice reflections in X-ray single crystal diffraction patterns, the splitting being caused by the presence of the periodic anti-phase domains. The nature of lattice modulation revealed by this intensity asymmetry has been investigated in detail. Fourier synthesis has been made using (h0l) type reflections and the crystal structure has been refined taking into account the information obtained from the synthesis. The result shows that the modulation is nothing but the periodic displacements of atoms from the normal positions, gold atoms being displaced away from the anti-phase domain boundaries by 0.015±0.005 Å and cadmium ones being displaced in the opposite directions by 0.028±0.005 Å. This type of lattice modulation seems not to contradict the idea suggested by Sato and Toth that the ordered alloys with long period are stabilized by the contact of Fermi surface with Brillouin zone boundaries.View full abstractDownload PDF (1212K) -
Yutaka Sugita, Hideo Fujiwara1965 Volume 20 Issue 1 Pages 98-102
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSSlow reorientation of ‘stripe domains’ driven by a constant ac magnetic field was observed by the Bitter technique in evaporated polycrystalline Ni, Fe, Co and Ni-Fe films. In terms of this effect, the relaxation phenomenon of B-H loops first observed by Huber and Smith in ‘mottled’ Permalloy films was fully explained.View full abstractDownload PDF (2020K) -
Shigehiro Komura, Nobuhiko Kunitomi1965 Volume 20 Issue 1 Pages 103-109
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSA neutron diffraction study has been performed on chromium alloy cantaining 0.45 atomic percent vanadium in comparison with the existing results on pure chromium. An experimental evidence has been obtained that both the magnetic period and magnetic moment decrease rapidly with increasing vanadium concentration supporting the theoretical prediction by Tachiki and Nagamiya. The implications of the experimental details are discussed in terms of the spin density wave mechanism.View full abstractDownload PDF (812K) -
Hiizu Fujita, Koichi Kobayashi, Takao Kawai, Kazumasa Shiga1965 Volume 20 Issue 1 Pages 109-122
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSHall effect of photoelectrons in cadmium sulfide has been studied in the temperature range from room temperature down to 1.8°K using the Redfield method operated by pulse circuits. The low field Hall mobility is found never to decrease at low temperatures in contrast to the previous investigations. The highest observed mobility is 5×104 cm2/volt sec at 1.8°K which is the same order of magnitude estimated from the cyclotron resonance measurements. Below 25°K, the mobility increases according to T−1⁄2 as the temperature is lowered. The general feature of the dependence of low field Hall mobility on temperature is described by the combination of scatterings by optical vibrations of lattice and piezoelectric effects. Anisotropy in mobility is observed only in the temperature region where the piezoelectric scattering dominates. The ratio of μa to μc is found to be 1.5±0.1. The results of high magnetic field effect on the Hall effect are analysed by the theory of Burnham, Brown and Knox with the observed low field mobilities.View full abstractDownload PDF (1936K) -
Shigenao Koide1965 Volume 20 Issue 1 Pages 123-132
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSAiming at a better understanding of still vague conduction processes in NiO, extensive measurements of the electrical resistivity ρ were made between 300 and 1020°K on LixNi(1−x)O single crystals epitaxially grown on the MgO substrates, where x from zero up to 0.065 was controlled by diffusion method. The main results are as follows: (1) logρ(⁄T) vs 1⁄T forms two straight lines, folded at a transition temperature T*. Each T* is close to the Néel temperature of NiO but a slight decreasing function of x. (2) With increasing x two activation energies ε1(T>T*) and ε2(T<T*), their difference ε2−ε1, and ρ sharply decrease at first (3) When x increases above 0.015, ε1 approaches a final constant of 0.14 eV, and ε2−ε1 to kT* with a maximum error of 20%, while ρ still exhibits a gentle decrease. (4) ε2−ε1 always has the positive sign which is opposite to that of early sintered samples. These results are discussed in terms of Toyozawa’s hopping model. The initial rapid decrease in ε1, ε2, and ρ with increasing x is explained by the sharp decrease in the attracting potential of neighboring Li+ ion, and the saturation value of the activation energy corresponds to the activation energy for the hopping process.View full abstractDownload PDF (1152K) -
P. N. Kaloni1965 Volume 20 Issue 1 Pages 132-138
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe steady slow flow of an incompressible visco-elastic liquid in a converging channel has been analysed by using Oldroyd’s equations for an elastico-viscous fluid. The solutions upto second order approximation have been obtained by perturbing the Newtonian solution. It is observed that in the first order approximation, the velocity pattern remains same as in the case of ordinary viscous fluid. However, in the second order approximation, the flow, unlike the case of Newtonian fluid does not remain purely radial, but is superposed by a secondary flow.View full abstractDownload PDF (656K) -
Makoto Moriyama, Masao Sumi1965 Volume 20 Issue 1 Pages 138-152
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSBy assuming the spatial variation of electron density and introducing the inner field of plasma, the microwave generation of harmonics in the presence of a static magnetic field is analysed. By solving the Boltzmann and Poisson equations with use of the perturbation technique, the distribution function of electrons, the inner electric field strength and the current density of the harmonics are obtained for the special cases. It is found that the output power of the second harmonic does not vanish even when the plasma has a complete geometrical symmetry and that the resonance which maximizes the output of the second harmonic occurs when the frequency of microwave ω is nearly equal to the cyclotron frequency ωc.View full abstractDownload PDF (1276K) -
Shin-ichiro Narita, Seiji Sugiyama1965 Volume 20 Issue 1 Pages 153-163
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe study of zinc sulfide single crystals, prepared by a vapor phase reaction method and doped with various amounts of impurities, has been made concerning optical transmission, photoconductivity, luminescence, thermal quenching and infrared quenching. The crystals grown through the bromine vapor process show blue luminescence, while these crystals, when doped further with copper of 1×10−6∼1×10−4 and 1×10−4∼1×10−3g atom per mol, emit green luminescence and dark blue one respectively.
Based on the experimental results, the models of these luminescence centers have been proposed. It is concluded that the blue emission is due to the recombinations of nearly free trapped electrons with trapped holes, the green emission is due to the recombinations of free electrons with trapped holes, and the dark blue emission is due to the transitions of trapped electrons to the valence band or to the levels near the band. From the optical transmission measurements of thin ZnS crystals with a light polarized parallel to and perpendicular to the c-axis of the crystal, it is found that the optical band gaps are 3.680 eV and 3.704 eV respectively, and that the value of the spin-orbit splitting of the valence band is 0.024 eV. The temperature dependence of the absorption edge is measured to be −4.86×10−4 eV/°C.View full abstractDownload PDF (1448K) -
Kanefusa Gotoh1965 Volume 20 Issue 1 Pages 164-169
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe amplification factor ci of small disturbances in a free boundary layer flow of a viscous, incompressible fluid is calculated for large values of the wave-number α.
It is found that there exist two asymptotic branches:
(Remark: Graphics omitted.)
both of which represent the rapidly damping disturbances. This result confirms the existence of the inviscid damping which was pointed out in the previous paper.View full abstractDownload PDF (604K) -
Ichiro Tsuboya, Makoto Sugihara1965 Volume 20 Issue 1 Pages 170
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Masami Onuki, Nobuyasu Hase1965 Volume 20 Issue 1 Pages 171
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Kisaburo Shogenji, Ryoichi Ito1965 Volume 20 Issue 1 Pages 172
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Yoshiki Sato, Toru Nakano1965 Volume 20 Issue 1 Pages 173
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Yasutaka Suemune1965 Volume 20 Issue 1 Pages 174-175
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Yoshika Masuda, Toshihiko Taki1965 Volume 20 Issue 1 Pages 175
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Hisao Kobayashi, Atsushi Nakamoto, Masanao Hosoe1965 Volume 20 Issue 1 Pages 176-177
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
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Masatoshi Tanaka1965 Volume 20 Issue 1 Pages 177
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
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Koji Kosuge, Sukeji Kachi, Hiroshi Nagasaki, Shigeru Minomura1965 Volume 20 Issue 1 Pages 178-179
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
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Takehiko Nakagawa, Shoichiro Nomura1965 Volume 20 Issue 1 Pages 179
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Takeo Fujiwara, Shoso Dohi1965 Volume 20 Issue 1 Pages 180-181
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Shuichi Tazawa, Kazukiyo Nagata, Muneyuki Date1965 Volume 20 Issue 1 Pages 181-182
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Morio Akiyama1965 Volume 20 Issue 1 Pages 182-183
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Hidetaro Abe, Kiyoshi Torii1965 Volume 20 Issue 1 Pages 183-184
Published: January 05, 1965
Released on J-STAGE: June 01, 2007
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Jun-ichi Umeda1965 Volume 20 Issue 1 Pages 185B
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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Soitiro Tosima, Takeo Hattori1965 Volume 20 Issue 1 Pages 185A
Published: January 05, 1965
Released on J-STAGE: May 29, 2007
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