MAGNETIC SPECIFIC-HEAT AND SPIN-GLASS-LIKE ORDERING IN THE PYROCHLORES - RE2MO2O7 (RE = Y, SM, GD, HO)

被引：0

作者：

RAJU, NP

GMELIN, E

机构：

[1] Max-Planck-Institut für Festkörperforschung, Stuttgart 80, D-7000

来源：

JOURNAL OF THERMAL ANALYSIS | 1993年 / 40卷 / 01期

关键词：

MAGNETIC SPECIFIC HEAT; PYROCHLORES; SPIN-GLASS-LIKE ORDERING;

D O I：

10.1007/BF02546585

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The pyrochlores RE2Mo2O7 (RE = Y, SM, Gd, Ho) display, with the exception of Ho2Mo2O7, magnetic transitions at 18 K, 68 K, 55 K, respectively. No long-range order occurs. The rare-earth atoms remain in the paramagnetic state down to 1.5 K. The magnetic specific heat behaviour is explained by spin-glass-like ordering of Mo4+ ions, imposing a molecular field of random character on the ram-earth ions, and by crystalline field-splitting effects.

引用

页码：341 / 347

页数：7

共 15 条

[1]

BLACKLOCK K, 1980, J CHEM PHYS, V15, P1966

[2]

GEMELIN E, 1981, J PHYS E, V14, P223

[3] SHORT-RANGE ORDERING IN A 3-DIMENSIONALLY FRUSTRATED MAGNET, TB2MO2O7, BY WIDE-ANGLE AND SMALL-ANGLE NEUTRON-DIFFRACTION [J].