Specific heat at the magnetic order transitions in RbFe (MoO4)2

被引：17

作者：

Jorge, GA

Capan, C

Ronning, F

Jaime, M

Kenzelmann, M

Gasparovic, G

Broholm, C

Shapiro, AY

Demianets, LA

机构：

[1] Univ Buenos Aires, Dept Fis, RA-1419 Buenos Aires, DF, Argentina

[2] Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA

[3] Johns Hopkins Univ, Baltimore, MD 21218 USA

[4] NIST, NCNR, Gaithersburg, MD 20899 USA

[5] AV Shubnikov Crystallog Inst, Moscow 117333, Russia

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 354卷 / 1-4期

关键词：

specific heat; Heisenberg antiferromagnet; magnetic order;

D O I：

10.1016/j.physb.2004.09.071

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We measured the low temperature specific heat of antiferromagnetic RbFe(MoO4)(2) single-crystal samples, by means of a microcalorimetric technique, in magnetic fields up to 15 T applied along the ab plane. Peaks in the specific heat vs. temperature were observed at all the magnetic phase transitions present in this system below 4 K. The temperature at which specific heat anomalies were observed are in agreement with earlier neutron scattering results. Additionally, we found that the transition into the paramagnetic state upon heating in a magnetic field of 10 T or larger decreases in increasing fields, extrapolating to zero temperature at an approximate field of 19 T. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：297 / 299

页数：3

共 7 条

[1] HEAT-CAPACITY MEASUREMENTS ON SMALL SAMPLES AT LOW-TEMPERATURES [J].