Structural, electrical transport and magnetic properties of the Co-doped La0.5Sr0.5TiO3 at high temperatures

P. T. Qiao; Z. H. Zhao; Y. G. Zhao; X. P. Zhang; W. Y. Zhang; S. B. Ogale; S. R. Shinde; T. Venkatesan; S. E. Lofland; C. Lanci

doi:10.1016/j.tsf.2004.03.031

Structural, electrical transport and magnetic properties of the Co-doped La_0.5Sr_0.5TiO₃ at high temperatures

P. T. Qiao
, Z. H. Zhao
, Y. G. Zhao
, X. P. Zhang
, W. Y. Zhang
, S. B. Ogale
, S. R. Shinde
, T. Venkatesan
, S. E. Lofland
, C. Lanci

Physics

Rowan University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The temperature dependence of the structural, electrical transport and magnetic properties of La_0.5Sr_0.5Ti_0.93Co _0.07O_3+δ thin films above room temperature have been studied. It is found that the structure of La_0.5Sr _0.5Ti_0.93Co_0.07O_3+δ samples changes at high temperatures. Correspondingly, the resistivity of the samples increases dramatically and the ferromagnetism of the samples disappears. We demonstrated that this transition is related to the oxygen absorption induced structural distortion, which results in the localization of carriers. This work indicates that carrier-mediated coupling between magnetic ions is essential for ferromagnetism in this system.

Original language	American English
Pages (from-to)	8-11
Number of pages	4
Journal	Thin Solid Films
Volume	468
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2004.03.031
State	Published - Dec 1 2004

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2004.03.031

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@article{58fbfc0f0cf640928cbc2b347f797474,

title = "Structural, electrical transport and magnetic properties of the Co-doped La0.5Sr0.5TiO3 at high temperatures",

abstract = "The temperature dependence of the structural, electrical transport and magnetic properties of La0.5Sr0.5Ti0.93Co 0.07O3+δ thin films above room temperature have been studied. It is found that the structure of La0.5Sr 0.5Ti0.93Co0.07O3+δ samples changes at high temperatures. Correspondingly, the resistivity of the samples increases dramatically and the ferromagnetism of the samples disappears. We demonstrated that this transition is related to the oxygen absorption induced structural distortion, which results in the localization of carriers. This work indicates that carrier-mediated coupling between magnetic ions is essential for ferromagnetism in this system.",

author = "Qiao, \{P. T.\} and Zhao, \{Z. H.\} and Zhao, \{Y. G.\} and Zhang, \{X. P.\} and Zhang, \{W. Y.\} and Ogale, \{S. B.\} and Shinde, \{S. R.\} and T. Venkatesan and Lofland, \{S. E.\} and C. Lanci",

note = "Funding Information: This work was supported by NSFC (project no. 50272031), the Excellent Young Teacher Program of MOE, P.R.C, Specialized Research Fund for the Doctoral Program of Higher Education (no. 2003 0003088) and National 973 project (no. 2002CB613505). This project was also supported by NSF under MRSEC Grant no. DMR-00-80008, by DARPA for two of the authors (T.V. and S.B.O).",

year = "2004",

month = dec,

day = "1",

doi = "10.1016/j.tsf.2004.03.031",

language = "American English",

volume = "468",

pages = "8--11",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Structural, electrical transport and magnetic properties of the Co-doped La0.5Sr0.5TiO3 at high temperatures

AU - Qiao, P. T.

AU - Zhao, Z. H.

AU - Zhao, Y. G.

AU - Zhang, X. P.

AU - Zhang, W. Y.

AU - Ogale, S. B.

AU - Shinde, S. R.

AU - Venkatesan, T.

AU - Lofland, S. E.

AU - Lanci, C.

N1 - Funding Information: This work was supported by NSFC (project no. 50272031), the Excellent Young Teacher Program of MOE, P.R.C, Specialized Research Fund for the Doctoral Program of Higher Education (no. 2003 0003088) and National 973 project (no. 2002CB613505). This project was also supported by NSF under MRSEC Grant no. DMR-00-80008, by DARPA for two of the authors (T.V. and S.B.O).

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The temperature dependence of the structural, electrical transport and magnetic properties of La0.5Sr0.5Ti0.93Co 0.07O3+δ thin films above room temperature have been studied. It is found that the structure of La0.5Sr 0.5Ti0.93Co0.07O3+δ samples changes at high temperatures. Correspondingly, the resistivity of the samples increases dramatically and the ferromagnetism of the samples disappears. We demonstrated that this transition is related to the oxygen absorption induced structural distortion, which results in the localization of carriers. This work indicates that carrier-mediated coupling between magnetic ions is essential for ferromagnetism in this system.

AB - The temperature dependence of the structural, electrical transport and magnetic properties of La0.5Sr0.5Ti0.93Co 0.07O3+δ thin films above room temperature have been studied. It is found that the structure of La0.5Sr 0.5Ti0.93Co0.07O3+δ samples changes at high temperatures. Correspondingly, the resistivity of the samples increases dramatically and the ferromagnetism of the samples disappears. We demonstrated that this transition is related to the oxygen absorption induced structural distortion, which results in the localization of carriers. This work indicates that carrier-mediated coupling between magnetic ions is essential for ferromagnetism in this system.

UR - https://www.scopus.com/pages/publications/4644332160

UR - https://www.scopus.com/pages/publications/4644332160#tab=citedBy

U2 - 10.1016/j.tsf.2004.03.031

DO - 10.1016/j.tsf.2004.03.031

M3 - Article

SN - 0040-6090

VL - 468

SP - 8

EP - 11

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Structural, electrical transport and magnetic properties of the Co-doped La_0.5Sr_0.5TiO₃ at high temperatures

Abstract

ASJC Scopus subject areas

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