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- Proceedings of the Physico-Mathematical Society of Japan. 3rd Series
- Proceedings of the Tokyo Mathematico-Physical Society. 2nd Series
- Tokyo Sugaku-Butsurigakukwai Kiji-Gaiyo
- Tokyo Sugaku-Butsurigakkwai Hokoku
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Volume 41, Issue 1
Displaying 51-57 of 57 articles from this issue
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Hidetoshi Miike, Junichi Yoshinaga, Kazuyoshi Hirakawa1976 Volume 41 Issue 1 Pages 347-348
Published: July 15, 1976
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSThe heat transport phenomenon in the two-dimensional Heisenberg ferromagnet K2CuF4 in investigated through the measurement of thermal conductivity under the magnetic field. The evidence and the quantitative estimation to magnon conductivity are obtained below the ordering temperature Tc. In the vicinity of Tc the anomalous dip of the conductivity, representing the phonon scattering by the critical fluctuation of spins, is observed. Above Tc, the enhanced conduction is also found, which is attributed to the diffusion or paramagnetic magnon.View full abstractDownload PDF (256K) -
Tomoyuki Hikita, Toshio Kudo, Yoshiki Chubachi, Takuro Ikeda1976 Volume 41 Issue 1 Pages 349-350
Published: July 15, 1976
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSDielectric and elastic measurements were made on Rb2Cd2(SO4)3 crystal which has a langbeinite-type structure. It was found that Rb2Cd2(SO4)3 undergoes phase transitions at −144°C and −170°C successively. The low temperature phases are both polar and the polarization is reversed by the application of the electric field. It is thus concluded that the two low temperature phases are ferroelectric.View full abstractDownload PDF (244K) -
Takehiko Ishiguro, Seiichi Kagoshima, Hiroyuki Anzai1976 Volume 41 Issue 1 Pages 351-352
Published: July 15, 1976
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe temperature dependences of dc conductivities along both the b-axis (σb) and the a-axis (σa) of TTF–TCNQ are presented. Two anomalies are found in both σb and σa corresponding to the Peierls transition (54K) and the first order transition with hysteresis (near 38K), which have been found in the superstructure.View full abstractDownload PDF (264K) -
Nobuo Itoh, Tanehiro Nakau1976 Volume 41 Issue 1 Pages 353-354
Published: July 15, 1976
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSIn X-ray topographs of boron-diffused silicon, an anomalous triple image contrast is observed for straight imperfections along the three ⟨1\bar10⟩ direction in (111) wafer. The contast is different from that of dislocation image observed by Borrmann effect of extinction effect. It is found that the imperfections are not simple 60° dislocations but the dislocations accompanied by imperfection of another type and have long range strained region besides the strain due to dislocation. It is concluded that the anomalous contrast is attributed to the dynamical diffraction effect in the strain field composed by the both imperfections.View full abstractDownload PDF (452K) -
Takashi Nishiwaki, Makoto Sakata, Jimpei Harada1976 Volume 41 Issue 1 Pages 355-356
Published: July 15, 1976
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSGeneralized Debye-Waller factor for the atom of 4⁄mmm site symmetry were formulated on the basis of classical Einstein oscillator model. In this formulation the effect of the fourth order anharmonic terms of one particle potential was taken into account. It is found that four anharmonic parameters are necessary in addition to two harmonic temperature parameters to describe the generalized Debye-Waller factor for this atom.View full abstractDownload PDF (244K) -
Akio Tsuji, Hajime Narumi1976 Volume 41 Issue 1 Pages 357-358
Published: July 15, 1976
Released on J-STAGE: May 29, 2007
JOURNAL RESTRICTED ACCESSThe Glauber theory is consistently extended to an indirect process. Transition matrix of the electron transfer from the ground state of the target to the excited states as well as the ground state of the scattered system is formulated.
The present formalism has no post-prior discrepancy, as in the usual Born approximation, for symmetric resonant processes. On the other hand it can be extended for charge transfer process between heavy ions.View full abstractDownload PDF (224K) -
Kunihito Nagayama, Terutoshi Murakami1976 Volume 41 Issue 1 Pages 359-360
Published: July 15, 1976
Released on J-STAGE: June 01, 2007
JOURNAL RESTRICTED ACCESSAn approximate formula is derived to describe the growth of a converging shock wave and is shown to be valid for a weak shock. The shock pressure or density in condensed media can be evaluated very easily by using this formula.View full abstractDownload PDF (224K)