-
Shigeru Kakigi
1965 Volume 20 Issue 11 Pages
1967-1980
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
Momentum spectra were obtained at several angles for deuteron and triton groups from the (α,
d) and the (α,
t) reactions on Be
9, F
19 and Al
27 at 28.6 MeV with a broad range magnetic analyzer and nuclear emulsions. The particles were identified by the measurement of the track length of the particles in the emulsions. The (α,
d) reactions were found to be similar to the (
d,
p) reactions in the behaviour of the excitation of the residual nuclear states explained by the Nilsson model. For the single particle states, the higher
l-value transition is favoured in the (α,
d) reaction in contrast to the (
d,
p) reaction. In the (α,
t) reaction the differential cross sections for the ground states of B
10 and Si
28 and for the first excited state of Ne
20 are preferentialy large and show forward rise.
View full abstract
-
Herbert B. Callen, Earl Callen
1965 Volume 20 Issue 11 Pages
1980-1988
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The two-spin cluster theory of Strieb, Callen and Horwitz, previously applied by the present authors to ferromagnets, is extended to antiferromagnets. The theory is formulated to include nearest and next-nearest neighbor exchange (
J1 and
J2) and to apply to those types of antiferromagnetic Néel phases in which equal numbers of spins are nominally “up” and “down”. When
J2=0 the theory reduces to the antiferromagnetic constant coupling theory of Kasteleijn and van Kranendonk. Consequently the theory suffers from the defect of an anti-Néel transition at low temperatures.
View full abstract
-
Nobuaki Tamagawa, Tadayasu Mitui
1965 Volume 20 Issue 11 Pages
1988-2001
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
A magnetic anisotropy induced by cold rolling was measured for single crystals of Cu-2 wt % Co alloys by means of a torque magnetometer at 77°K and 300°K. The crystallographic plane and direction of rolling were {100}〈110〉 and {110}〈001〉. The magnitude of the induced anisotropy and its temperature dependence were satisfactorily explained in terms of the superposition of the shape anisotropy of cobalt-rich precipitates and the crystal anisotropy of h.c.p. cobalt precipitates.
Calculations were made on the uniaxial magnetic anisotropy by using a model of shape changes and the crystalline transformation of cobalt precipitates by slip deformation. A slip mode was considered to explain the shape of precipiates caused by deformation.
View full abstract
-
Takejiro Kaneko, Shunya Abe
1965 Volume 20 Issue 11 Pages
2001-2006
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
Magnetization of a single crystal of α-Fe
2O
3 was measured in a magnetic field up to 80 kOe in the temperature range between 4.2° and 295°K. When the magnetic field was applied parallel to the [111] axis, the field-induced-transitions from the antiferromagnetic to the weak ferromagnetic states were observed below 213°K. From the critical fields thus obtained, the temperature dependence of anisotropy was determined. The anisotropy energy at 4.2°K was found to be −7.2×10
4 erg/gr. When the field was applied perpendicular to the [111] axis, the field-induced transitions from the weak ferromagnetic to the antiferromagnetic state were observed at 236° and 240°K. The field-induced transitions mentioned above are discussed on the basis of Dzyaloshinskii’s theory for α-Fe
2O
3.
View full abstract
-
Shoichi Fushimi, Takuro Ikeda
1965 Volume 20 Issue 11 Pages
2007-2012
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
Single crystals of the lead zirconate-titanate solid solution containing 85 percent and those containing less than 40 percent of lead zirconate have been prepared from a molten solvent of a mixture of KF and PbF
2 , and the measurements of optical birefringence have been made. They are all optically negative. The absolute value of birefringence of the crystal containing less than 20 percent of PbZrO
3 shows a maximum when plotted against temperature and resembles the behavior of PbTiO
3. Such an anomalous behavior tends to vanish with increasing amount of PbZrO
3. These phenomena are explained taking account of the effect of covalent bonding, after the method developed by Kobayashi and Yamada. The contribution of the covalent nature increases at first and then decreases gradually with increasing PbZrO
3 content. The crystal containing 85 percent of PbZrO
3 is in rhombohedral phase and has larger anisotropy than in tetragonal phase.
View full abstract
-
Koji Takano, Takao Sato
1965 Volume 20 Issue 11 Pages
2013-2020
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The Hall coefficient, the electrical resistivity and the thermoelectric power of four lead alloy systems, Pb-Hg, Pb-In, Pb-Tl and Pb-Bi were measured over wide e/a range at room temperature. Assuming the rigid band model and the two band analysis, partial conductivities of carriers were separated from the Hall coefficient and the resistivity data. With these conductivities, the thermoelectric power and the temperature dependence of resistivity were calculated. The magnitude of order and the general trends were in agreement with the experimental results. Also, the ratio of the time of relaxation due to the thermal scattering to that of the solute atom scattering was calculated and compared with the theoretical value. Existence of the ordered state PbTl
3 was suggested from the fact that the Hall coefficient and the thermoelectric power changed from negative value to positive direction, in a region where thallium concentration is larger than 50 atomic percent.
View full abstract
-
Takeshi Shinohara, Hiroshi Watanabe
1965 Volume 20 Issue 11 Pages
2020-2027
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The internal magnetic field and the quadrupole splitting of Co
59 in ferromagnetic cobalt compounds, Co
3B and Co
2B, were measured. The thermomagnetic curve of Co
2B was also measured. A dispersion type signal and four septet absorption type signals were found in the resonance pattern of Co
59 in Co
3B, while only a septet absorption type signal was found in Co
2B. The internal magnetic fields of Co
59 in Co
3B extraporated to 0°K ranged from 137.9 KOe to 112.3 KOe, while that in Co
2B was 54.5 KOe. Comparing with the data on Co
2B, the contributions from the two crystallographic cobalt sites in Co
3B were discussed.
The electronic structure of cobalt borides was considered on the basis of the present data and those on other transition metal borides, carbides and nitrides.
View full abstract
-
P. Csavinszky
1965 Volume 20 Issue 11 Pages
2027-2035
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The correct potential in the effective mass equation for shallow impurity states should be the difference of the potential of an impurity ion in the solid and that of an atom of the semiconductor host crystal. In the present paper such a difference potential is constructed for the centralcell region of Column III acceptors in Ge, by making use of analytic approxiamations to the respective potentials, and considered as a perturbation to the shielded Coulomb potential of the original theory. Using first-order perturbation theory and approximate envelope hole wave functions, obtained by several workers from variational solutions of the original effective mass equation, corrections are computed to the energies of holes in their ground states. The role of strain and dielectric corrections, among others, as sources of the remaining discrepancies between experimental and theoretical values is discussed and possible approaches for further improvement within effective mass theory is indicated.
View full abstract
-
Takemi Komatsubara, Katsuo Kinoshita, Eiji Hirahara
1965 Volume 20 Issue 11 Pages
2036-2045
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
Torque measurements on a single crystal of manganese phosphide are carried out at 4.2°K in a metamagnetic state for three orientations of the single crystal. The characteristic zero torque is observed on the measurements in the orthorhombic
ac-plane of the crystal. A cone spiral spin configuration is proposed with the symmetry axis along the
b-axis. With this configuration the results obtained are qualitatively explained. The critical fields along the
c- and
b-axis at 4.2°K are determined as 2.03 kOe and 5.40 kOe, respectively.
View full abstract
-
Shigeo Shionoya, Yoshitomo Kobayashi, Takao Koda
1965 Volume 20 Issue 11 Pages
2046-2053
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The polarization characteristics of the green-copper luminescence in a hexagonal ZnS:Cu, Al single crystal grown from the melt were investigated. The luminescence is polarized preferentially perpendicular to the
c-axis, independently of the polarization and wavelength of excitation light. It is concluded that the luminescence center does not have a symmetry lower than that of the host lattice and is probably composed of a substitutional non-associated Cu
+ ion. Two different types of arguments for the polarization results are presented;
i.e. one which pays attention to the symmetry of the energy bands and the other in which the nature of the Cu
+ levels is considered in terms of the crystal field theory. It appears most plausible to say that the luminescence is due to the recombination of a free or nearly free electron with a hole at the 3
d–
e(
t2) orbit of Cu
+.
View full abstract
-
Koichi Shindo, Akira Morita, Hiroshi Kamimura
1965 Volume 20 Issue 11 Pages
2054-2059
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
The spin-orbit couplings in the valence bands of the zincblende and wurtzite structures such as cuprous halides and ZnO are investivigated in the tight-binding approximation. It is shown that the d-orbital of the cation contributes a negative term to the spin-orbit coupling in the valence band at
k=0 in these compounds and, as a result of it, the spin-orbit splittings in the valence bands of CuCl and ZnO are inverted.
View full abstract
-
Ushio Kawabe, Taketoshi Yanagi, Shozo Sawada
1965 Volume 20 Issue 11 Pages
2059-2073
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
First the dielectric properties of rubidium-potassium nitrate mixed crystals were investigated. From the
X-ray measurement, the
D-
E hysteresis loop observation, and the dielectric constant measurement, these Rb
xK
1−xNo
3 mixed crystals, of which there may exist a mixing limit at some molar ratio between 0.52 and 0.56, were found to be also ferroelectric in the phase III on cooling alone, as in pure KNO
3, in contrast to the case of (NH
4)
xK
1−xNO
3. Next the results were discussed of the temperature dependence of lattice parameters measured by a high temperature
X-ray powder diffractometer in relation with the phase transition behavior in KNO
3, Rb
0.23K
0.77NO
3, and (NH
4)
0.39K
0.61NO
3. In every substance, a marked shrinkage of the unit cell was seen corresponding to the appearance of the ferroelectricity. From the obtained results, the discussion was made of the ferroelectric behaviors of the KNO
3-series mixed crystals.
View full abstract
-
Yasuharu Makita
1965 Volume 20 Issue 11 Pages
2073-2080
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
Tris-sarcosine calcium chloride, (CH
3NHCH
2COOH)
3·CaCl
2, is ferroelectric below the Curie point, 127°K, where the dielectric constant, ε
b, at low frequencies shows a sharp peak. The dielectric constants ε
a and ε
c. do not show any noticeable anomaly at the Curie point. The dielectric measurement at a microwave frequency of 9.4 Gc/s indicates that there is a marked dielectric dispersion in the Curie temperature region. The spontaneous polarization is 0.27 μCoul/cm
2 at 78°K. The high-temperature phase is orthorhombic with space group
Pnma and
a=9.153 Å,
b=17.48 Å,
c=10.28 Å at room temperature. The low-temperature phase may possibly be orthorhombic with point group
C2v. The measurement of specific heat as a function of temperature yields δ
S=(0.38±0.04) cal/mole·degree. The results are discussed in comparison with those of some ferroelectrics such as (glycine)
3·H
2SO
4.
View full abstract
-
R. L. Batra
1965 Volume 20 Issue 11 Pages
2081-2084
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
The flow of a Bingham material along an infinite plane with a free surface has been studied. The plane is inclined to the horizon and moving with a constant velocity paralell to itself. There is a core formation in the flow of material. The nature, extent and effect of the core have been investigated.
View full abstract
-
Koji Okano
1965 Volume 20 Issue 11 Pages
2085
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Yoshichika Bando, Masao Kiyama, Naoichi Yamamoto, Toshio Takada, Teruy ...
1965 Volume 20 Issue 11 Pages
2086
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Akira Sawaoka, Shôhei Miyahara
1965 Volume 20 Issue 11 Pages
2087
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Hideo Fujiwara, Yutaka Sugita, Nobuo Saito
1965 Volume 20 Issue 11 Pages
2088
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Tadao Honzawa, Shigetoshi Tanaka
1965 Volume 20 Issue 11 Pages
2089
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Masamitsu Hirai
1965 Volume 20 Issue 11 Pages
2090
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
-
Hiroshi Amemiya, Toshihiko Dote
1965 Volume 20 Issue 11 Pages
2091
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
-
Hideo Fujiwara
1965 Volume 20 Issue 11 Pages
2092
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Shoichi Annaka, Seishi Kikuta, Kazutake Kohra
1965 Volume 20 Issue 11 Pages
2093
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Kazumasa Miyano
1965 Volume 20 Issue 11 Pages
2094
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Morikazu Toda
1965 Volume 20 Issue 11 Pages
2095A
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
-
Yoshitaka Tsutsumi, Masakazu Kunitomo, Tsuneo Hashi
1965 Volume 20 Issue 11 Pages
2095B-2096
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Kiyoe Kato, Morihiro Yoseli, Satoru Kiyama, Shinsuke Watanabe
1965 Volume 20 Issue 11 Pages
2097-2098
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Yoshikazu Sugiura
1965 Volume 20 Issue 11 Pages
2098
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Shigetoshi Tanaka, Tadao Honzawa, Kazuo Takayama
1965 Volume 20 Issue 11 Pages
2099-2100
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Nobutsugu Imanishi, Masakatsu Sakisaka, Fumio Fukuzawa, Yoshiaki Uemur ...
1965 Volume 20 Issue 11 Pages
2100-2101
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
O. Inkinen, V. Meisalo
1965 Volume 20 Issue 11 Pages
2101-2102
Published: November 05, 1965
Released on J-STAGE: June 01, 2007
JOURNAL
RESTRICTED ACCESS
-
Haruhiko Suzuki, Syohei Miyahara
1965 Volume 20 Issue 11 Pages
2102-2103
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS
-
Hiroaki Matsumoto
1965 Volume 20 Issue 11 Pages
2104
Published: November 05, 1965
Released on J-STAGE: May 29, 2007
JOURNAL
RESTRICTED ACCESS