PHONON ANOMALIES IN TRANSITION-METAL NITRIDES - ZRN

被引:53
作者
CHRISTENSEN, AN
DIETRICH, OW
KRESS, W
TEUCHERT, WD
机构
[1] RISO NATL LAB, DEPT PHYS, DK-4000 ROSKILDE, DENMARK
[2] MAX PLANCK INST FESTKORPERFORSCH, D-7000 STUTTGART, FED REP GER
[3] TECH UNIV MUNICH, DEPT PHYS E21, D-8000 MUNICH 2, FED REP GER
关键词
D O I
10.1103/PhysRevB.19.5699
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The phonon dispersion curves in superconducting ZrN have been measured in the highsymmetry directions Δ and Λ by coherent inelastic neutron scattering at room temperature. Anomalies in the dispersion of the acoustic branches have been detected which are similar to those reported already for the superconducting transition-metal carbides and for TiN. The experimental results are well reproduced by a double-shell model which has also been used to calculate the phonon density of states. The calculated density is in good agreement with the results of time-of-flight measurements and with recent Raman data. © 1979 The American Physical Society.
引用
收藏
页码:5699 / 5703
页数:5
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