LOW-TEMPERATURE SPECIFIC-HEAT OF NDMO3 (M=CO, FE, CR, NI) - MAGNETIC-ORDERING OF ND

被引：49

作者：

BARTOLOME, F ^{[1
]}

KUZMIN, MD ^{[1
]}

BARTOLOME, J ^{[1
]}

BLASCO, J ^{[1
]}

GARCIA, J ^{[1
]}

SAPINA, F ^{[1
]}

机构：

[1] UNIV VALENCIA,UIBCM,DEPT QUIM INORGAN,BURJASSOT,SPAIN

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 91卷 / 03期

关键词：

D O I：

10.1016/0038-1098(94)90218-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A low temperature (200 mK < T < 5 K) specific heat study of NdMO3 (M = Co, Fe, Cr, Ni) reveals that in NdCoO3 the Nd ions order cooperatively at T(N2) = 1.20(1) K in good agreement with the simple cubic S=1/2 XY model. In contrast, in NdFeO3, NdNiO3 and NdCrO3 a Schottky-type anomaly caused by the Nd-M interaction is the dominating feature of the specific heat curves, whereas the Nd ordering peak is greatly suppressed and shifted to lower temperatures in NdFeO3 and NdNiO3 (T(N2) = 1.05(1) and 0.77(2) K, respectively) and does not appear in the Cr compound. These phenomena depend critically on the strength of the Nd-M exchange field experienced by the Nd ions-zero in NdCoO3, intermediate in NdFeO3 and NdNiO3, and large in NdCrO3. Existence of two magnetically different Nd sites in NdNiO3 is demonstrated.

引用

页码：177 / 182

页数：6

共 31 条

[1]

Ayasse B., 1970, CR ACAD SCI A B, V271, P1220

[2]

BARTOLOME F, IN PRESS

[3]

BARTOLOME F, 1994, IEEE T MAGN, V30

[4]

Belov K. P., 1972, Soviet Physics - Solid State, V14, P199

[5]

Belov K. P., 1976, Soviet Physics - Uspekhi, V19, P574, DOI 10.1070/PU1976v019n07ABEH005274

[6]

BELOV KP, 1971, FIZ TVERD TELA+, V13, P518

[7]

Bertaut E. F., 1963, SPIN ARRANGEMENTS CR, VIII, P149, DOI 10.1016/B978-0-12-575303-6.50011-7

[8] A STUDY OF MAGNETOSTATIC PROPERTIES AND MAGNETIC STRUCTURES OF CHROMITES OF RARE EARTH AND YTTRIUM [J].

BERTAUT, EF ;

MARESCHAL, J ;

DEVRIES, G ;

ALEONARD, R ;

PAUTHENET, R ;

REBOUILLAT, JP ;

ZARUBICKA, V .

IEEE TRANSACTIONS ON MAGNETICS, 1966, MAG2 (03) :453-+

[9] ETUDE DE LA STRUCTURE MAGNETIQUE DES CHROMITES DERBIUM ET DE NEODYME PAR DIFFRACTION NEUTRONIQUE [J].

BERTAUT, EF ;

MARESCHA.J .

SOLID STATE COMMUNICATIONS, 1967, 5 (02) :93-&

[10]

BERTAUT EF, 1956, J PHYS RADIUM, V17, P129

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