Structural and magnetic properties of Yb1-xSrxMnO3

被引：9
作者：
Bykov, E. O. [1 ]
Gavrilova, T. P. [2 ,3 ]
Yatsyk, I., V [2 ,3 ]
Gilmutdinov, I. F. [3 ]
Parfenov, V. V. [3 ]
Kurbakov, A., I [1 ]
Eremina, R. M. [2 ,3 ]
机构：
[1] Natl Res Ctr Kurchatov Inst, PNPI, Orlova Roscha 1, Gatchina 188300, Leningrad Distr, Russia
[2] Russian Acad Sci, Fed Res Ctr Kazan Sci Ctr, Kazan EK Zavoisky Phys Tech Inst KPhTI, Sibirsky Tract 10-7, Kazan 420029, Russia
[3] Kazan Volga Reg Fed Univ, Inst Phys, Kremlevskaya St 18, Kazan 420008, Russia
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 08期
基金：
俄罗斯科学基金会;
关键词：
Magnetically ordered materials; Rare earth ceramic compounds; Neutron diffraction; Crystal structure; Magnetic measurements; Electron spin resonance; ELECTRON-PARAMAGNETIC-RESONANCE; MAGNETOCALORIC PROPERTIES; PHASE; BEHAVIOR; CRYSTAL; X=0.1; HEAT; ER;
D O I：
10.1016/j.ceramint.2019.02.083
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural and magnetic properties of YbMnO3 and Yb0.82Sr0.18MnO3 multiferroics were studied by neutron powder diffraction (NPD), magnetometry and electron spin resonance (ESR) technics in a wide temperature range. Neutron diffraction measurements showed that the substitution of ytterbium ions with strontium ions in hexagonal h - YbMnO3 (space group P6(3)cm) leads to the destabilization of the crystal structure of the last compound and appearance of the mixture of three phases with different structure: hexagonal phase h - Yb0.95Sr0.05MnO3 (space group P6(3)cm), orthorhombic phase o - Yb0.69Sr0.31MnO3 (space group Pbnm), hexagonal phase SrMnO3 (space group P6(3)cm). This fact was proved by the ESR measurements in which a several signals due to the phases of different structure were observed. NPD measurements showed that the magnetic structure of h - Yb0.95Sr0.05MnO3 phase is similar to the magnetic structure of the pure h - YbMnO3 and demonstrate the presence of the antiferromagnetic ordering in the samples. ESR and magnetization measurements of h - YbMnO3 sample proved the presence of the antiferromagnetic correlations and also they showed the appearance of the ferromagnetically correlated nanoregions.
引用
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页码：10286 / 10294
页数：9
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