Effects of holmium substitution on multiferroic properties in Tb0.67Ho0.33MnO3

被引：28

作者：

Staruch, M. ^{[1
]}

Lawes, G. ^{[2
]}

Kumarasiri, A. ^{[2
]}

Cotica, L. F. ^{[3
]}

Jain, M. ^{[1
,4
]}

机构：

[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[2] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48202 USA

[3] Univ Estadual Maringa, Dept Phys, BR-87020900 Maringa, Parana, Brazil

[4] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 06期

基金：

美国国家科学基金会;

关键词：

SINGLE-CRYSTALS; HO; POLARIZATION; PEROVSKITES; MANGANITES; PHONONS; TBMNO3; RAMAN; PR; ND;

D O I：

10.1063/1.4792526

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, the structural, electrical, and magnetic properties of orthorhombic TbMnO3 and Tb0.67Ho0.33MnO3 ceramics are presented. The lattice parameters and the Mn-O-Mn bond angle were found to decrease with Ho-substitution as evidenced by Rietveld refinement of the X-ray diffraction data and Raman spectroscopy measurements. A weak ferromagnetic moment was observed in both dc and ac magnetic measurements of the Ho-substituted sample possibly due to spin canting in the antiferromagnetic phase. Tb0.67Ho0.33MnO3 was confirmed to be multiferroic with appearance of spontaneous polarization below 25 K and an additional increase in polarization similar to 15.5 K associated with the ordering of the Ho3+ moments. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792526]

引用

页数：5

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