Suppressed antiferromagnetic ordering and enhanced electrical conduction in doped iridate Sr2-xPrxIrO4

被引：4

作者：

Liu, Hui ^{[1
]}

Liang, Dandan ^{[2
,3
]}

Bian, Jian ^{[1
]}

Feng, Yuan ^{[1
]}

Xie, Yu ^{[1
]}

Fang, Baolong ^{[1
]}

机构：

[1] Hefei Univ, Coll Adv Mfg Engn, Hefei 230601, Peoples R China

[2] Anhui Polytech Univ, Coll Mech & Automot Engn, Wuhu 241000, Peoples R China

[3] Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 02期

基金：

中国国家自然科学基金;

关键词：

iridates; magnetism; electric transport properties; electron doping; TRANSITION;

D O I：

10.1088/2053-1591/ab5f6d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sr2IrO4 has been shown to exhibit a novel J(eff) = 1/2 Mott spin-orbit insulating state with antiferromagnetic ordering. In the present investigation, the effects of Pr substitution at Sr-site on structural, magnetic and electrical properties are studied in Sr2IrO4. Pr-doped samples still retain the insulating behavior, but with the increase of Pr doping concentration, the resistivity decreases. The magnetic properties show that long-range antiferromagnetic order is collapsed when the Pr doping content increases up to 20%, which may results from a competition between the AFM (Ir 5d electrons) and ferromagnetic (Pr 4 f electrons) coupling. In addition, Pr doping induces a spin glasslike state at low temperatures.

引用

页数：9

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