Synthesis, crystal structures, and magnetic properties of double perovskites SrLaNiOsO6 and BaLaNiOsO6

被引：15

作者：

Feng, Hai L. ^{[1
]}

Schnelle, Walter ^{[1
]}

Tjeng, Liu Hao ^{[1
]}

Jansen, Martin ^{[1
,2
]}

机构：

[1] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

SOLID STATE COMMUNICATIONS | 2016年 / 243卷

关键词：

Ni2+-Os5+; Double perovskite; Structure distortion; Magnetic property; HIGH-PRESSURE SYNTHESIS; RARE-EARTH-ELEMENT; OSMIUM; SR2FEOSO6; SR2MGOSO6; RE; NI; CO;

D O I：

10.1016/j.ssc.2016.06.008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

New double perovskite oxides SrLaNiOsO6 and BaLaNiOsO6 were synthesized by solid state reactions from the respective binary metal oxides, and their crystal structures and magnetic properties were characterized. At room temperature SrLaNiOsO6 and BaLaNiOsO6 crystallize in ordered double perovskite structures with space groups of P2(1)/n (monoclinic) and I4/m (tetragonal), respectively. They are electrically semiconducting with an activation energy of approximate to 0.35 eV. Specific heat and magnetic measurements indicate that SrLaNiOsO6 shows predominantly antiferromagnetic correlations and displays antiferromagnetic transition around 60 K. However, for the isoelectronic BaLaNiOsO6 ferromagnetic correlations are predominant and there is no clear feature of a magnetic transition detectable. The remarkable change in magnetic properties of ALaNiOsO(6) (A = Sr and Ba) can be related to the degree of structure distortions, i.e. the bending of the O-B-O (B = Ni,Os) links. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：49 / 54

页数：6

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