TY - JOUR
T1 - Phonon and specific heat analyses in rare-earth hexaborides
AU - Kunii, S.
AU - Takahashi, K.
AU - Iwashita, K.
N1 - Funding Information:
We are very grateful to Prof. T. Goto, Prof. M. Motokawa, and Assoc. Prof. H. Nojiri for helpful discussions. This work was supported by a Grant-in-Aid from the Japanese Ministry of Education, Science, and Culture.
PY - 2000
Y1 - 2000
N2 - Systematic analyses of the specific heat of rare-earth hexaborides are presented using phonon data. Similarity of phonon dispersion curves at lower frequency is found for the rare-earth hexahorides. By this fact, it becomes possible to deduce unknown phonon dispersion curves. We can calculate the phonon specific heat precisely using phonon dispersion curves. Magnetic entropy is derived for GdB6, TbB6, DyB6, and HoB6, indicating their magnetic ground states which are consistent with a point-charge model developed by K. R. Lea et al. (1962, J. Phys. Chem. Solids 23, 1381). (C) 2000 Academic Press.
AB - Systematic analyses of the specific heat of rare-earth hexaborides are presented using phonon data. Similarity of phonon dispersion curves at lower frequency is found for the rare-earth hexahorides. By this fact, it becomes possible to deduce unknown phonon dispersion curves. We can calculate the phonon specific heat precisely using phonon dispersion curves. Magnetic entropy is derived for GdB6, TbB6, DyB6, and HoB6, indicating their magnetic ground states which are consistent with a point-charge model developed by K. R. Lea et al. (1962, J. Phys. Chem. Solids 23, 1381). (C) 2000 Academic Press.
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U2 - 10.1006/jssc.2000.8849
DO - 10.1006/jssc.2000.8849
M3 - Article
AN - SCOPUS:0033671807
VL - 154
SP - 275
EP - 279
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 1
ER -