Influence of High Magnetic Field and Zn Doping on Robust CO Phase of La0.5Ca0.5MnO3

被引：2

作者：

Jin, Z. ^{[1
,2
]}

Xia, Z. C. ^{[1
]}

Wei, M. ^{[1
,2
]}

Yang, F. ^{[1
,2
]}

Huang, S. ^{[1
,2
]}

Xiao, G. L. ^{[1
,2
]}

Shang, C. ^{[1
,2
]}

Cheng, H. ^{[1
,2
]}

Wu, H. ^{[1
,2
]}

Zhang, X. X. ^{[1
,2
]}

Ouyang, Z. W. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2017年 / 46卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Charge order; hysteresis; metamagnetic transition; magnetoresistance; COLOSSAL MAGNETORESISTANCE; LA1-XCAXMNO3; MANGANITES; FE;

D O I：

10.1007/s11664-017-5537-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic and electrical transport properties of La0.5Ca0.5-x Zn (x) MnO3 (x = 0, 0.1, 0.15) have been investigated in a wide magnetic field range from 0 T to 50 T. Experimental results show that doping of nonmagnetic Zn2+ ion at Ca site and application of high magnetic field had obvious tuning effects on the stability of the robust charge-order phase, inducing new magnetization and electrical transport behaviors. In particular, obvious temperature and field hysteresis was induced, leading to enhanced magnetoresistance at around room temperature. Based on the intricate interplay between the external magnetic field and chemical strain (lattice distortion) induced by the dopant, which changed the bond length and the angle of double exchange and partially destroyed the charge-order phase, a weak ferromagnetic phase formed. The hysteretic behavior and enhanced magnetoresistance can be understood based on the tuning effects of the high magnetic field and dopant on the stability of the charge-order phase.

引用

页码：4725 / 4732

页数：8

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