Effect of Ti ion doping on martensitic transition of La0.5Sr0.5Mn1-xTixO3

被引：11

作者：

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

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

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

Shi, L. R. ^{[1
,2
]}

Huang, J. W. ^{[1
,2
]}

Chen, B. R. ^{[1
,2
]}

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

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

Liu, L. ^{[2
]}

Huang, Y. ^{[1
]}

机构：

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

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 588卷

关键词：

Manganite; Localization; Martensitic transition; Doping; GIANT MAGNETORESISTANCE; TRANSPORT-PROPERTIES; FILMS; LA0.7SR0.3MN1-XTIXO3; PEROVSKITES;

D O I：

10.1016/j.jallcom.2013.11.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrical transport and magnetic properties of La0.5Sr0.5Mn1-xTixO3 (3x = 0, 0.1, 0.15 and 0.2) have been investigated. Experimental results show that the different Ti4+ doping level has obviously different effect on electrical transport and magnetization properties. Especially, a martensitic transition was observed in higher Ti4+ doping levels (3x = 0.15, 0.2). In which a doped Ti4+ ion substitutes a Mn4+ ion, with increasing in Ti4+ doping level from x = 0 to 0.2, the ratio of Mn3+/Mn4+ increases from 1 to 5/3, that is the coupling via Mn3+-O-2-Mn4+ double exchange increases leading to a localized ferromagnetic domain in the charge ordering of matrix of La0.5Sr0.5MnO3. With the increasing of magnetic field to a critical field, the localized magnetic moment was delocalized and rotated to parallel to an applied field showing a martensitic transition. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：53 / 58

页数：6

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