Low-temperature properties of Ca-doped YbMnO3 multiferroic single crystals

被引：12

作者：

Abramov, N. ^{[1
]}

Chichkov, V. ^{[1
]}

Lofland, S. E. ^{[2
]}

Mukovskii, Y. M. ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

[2] Rowan Univ, Glassboro, NJ 08028 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期

基金：

美国国家科学基金会;

关键词：

MAGNETIC PHASE-DIAGRAMS; YMNO3; HEAT;

D O I：

10.1063/1.3556961

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The specific heat c(p) and magnetization of single crystal hexagonal manganites of the type Yb1-xCaxMnO3 (x = 0, 0.05, and 0.10) were measured in a wide temperature range as a function of magnetic field. Antiferromagnetic ordering of the Mn sublattice occurs at T-N = 83 K. Ca doping has surprisingly minimal effect on the magnetic properties. At low temperature (similar to 3.5 K), all compounds show ferromagnetic (FM) ordering in the basal plane attributed to Yb in site 2a. For low fields applied along the c direction, Yb spin reorientation occurs and FM ordering disappears. cp shows a broad maximum centered at the temperature similar to 6 K that is consistent with a Schottky anomaly related to the Zeeman splitting of the Yb moments due to Mn molecular field. In the field of 30 kOe, the re-entrant FM transition takes place with Yb ions in sites 2a and 4b. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556961]

引用

页数：3

共 14 条

[1] Ferroelectricity and structure in the YMnO3 family [J].