CRITICAL PHONON SCATTERING NEAR A FERROMAGNETIC TRANSITION AND ITS EFFECT ON THERMAL CONDUCTIVITY OF CUK2CL4.2H2O

被引：17
作者：
DIXON, GS
WALTON, D
机构：
[1] Solid State Division, Oak Ridge National Laboratory, Oak Ridge
[2] Department of Physics, McMaster University, Hamilton
来源：
PHYSICAL REVIEW | 1969年 / 185卷 / 02期
关键词：
D O I：
10.1103/PhysRev.185.735
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By comparing the thermal conductivity in a magnetic field large enough to align the spin system with the conductivity at zero field, it has been possible to measure the change in the thermal conductivity due to critical scattering near the transition in the cubic Heisenberg ferromagnet CuK2Cl4•2H2O. A phonon scattering law deduced from these results agrees well with ultrasonic attenuation measurements on the ferromagnet gadolinium. Some comparison has been possible between these results and dynamical scaling laws in their present form. © 1969 The American Physical Society.
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页码：735 / &
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