Structure and magnetotransport properties of epitaxial nanocomposite La0.67Ca0.33MnO3:SrTiO3 thin films grown by a chemical solution approach

被引：18

作者：

Fei, Ling ^{[2
]}

Zhu, Leyi ^{[3
]}

Cheng, Xuemei ^{[1
]}

Wang, Haiyan ^{[4
]}

Baber, Stacy M. ^{[2
]}

Hill, Joshua ^{[2
]}

Lin, Qianglu ^{[2
]}

Xu, Yun ^{[2
]}

Deng, Shuguang ^{[2
]}

Luo, Hongmei ^{[2
]}

机构：

[1] Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA

[2] New Mexico State Univ, Dept Chem Engn, Las Cruces, NM 88003 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[4] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 08期

基金：

美国国家科学基金会;

关键词：

POLYMER-ASSISTED DEPOSITION; MAGNETORESISTANCE; COMPOSITES; LA0.7CA0.3MNO3; ENHANCEMENT; TRANSPORT; BEHAVIOR; SYSTEM;

D O I：

10.1063/1.3688048

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial La0.67Ca0.33MnO3:SrTiO3 (LCMO:STO) composite thin films have been grown on single crystal LaAlO3(001) substrates by a cost effective polymer-assisted deposition method. Both x-ray diffraction and high-resolution transmission electron microscopy confirm the growth of epitaxial films with an epitaxial relationship between the films and the substrates as (002)(film)parallel to(002)(sub) and [202](film)parallel to[202](sub). The transport property measurement shows that the STO phase significantly increases the resistivity and enhances the magnetoresistance (MR) effect of LCMO and moves the metal-insulator transition to lower temperatures. For example, the MR values measured at magnetic fields of 0 and 3 T are -44.6% at 255K for LCMO, -94.2% at 125K for LCMO:3% STO, and -99.4% at 100K for LCMO:5% STO, respectively. (C) 2012 American Institute of Physics. [doi:10.1063/1.3688048]

引用

页数：5

共 31 条

[11] Structural and magneto-transport properties of LCMO-STO composites
Joshi, Leena
Rajput, Shailendra Singh
Keshri, Sunita
[J]. PHASE TRANSITIONS, 2010, 83 (07) : 482 - 490
[12] The effect of TiO2 doping on the structure and magnetic and magnetotransport properties of La0.75Sr0.25MnO3 composite -: art. no. 043908
Kameli, P
Salamati, H
Eshraghi, M
Mohammadizadeh, MR
[J]. JOURNAL OF APPLIED PHYSICS, 2005, 98 (04)
[13] Low field magnetotransport properties of (La0.7Sr0.3MnO3)0.5:(ZnO)0.5 nanocomposite films
Kang, B. S.
Wang, H.
MacManus-Driscoll, J. L.
Li, Y.
Jia, Q. X.
Mihut, I.
Betts, J. B.
[J]. APPLIED PHYSICS LETTERS, 2006, 88 (19)
[14] Excellent low field magnetoresistance properties of the La0.7Sr0.3Mn1+dO3-manganese oxide composites
Kang, Young-Min
Kim, Hyo-Jin
Yoo, Sang-Im
[J]. APPLIED PHYSICS LETTERS, 2009, 95 (05)
[15] Study of grain boundary contribution and enhancement of magnetoresistance in La0.67Ca0.33MnO3/V2O5 composites
Karmakar, S
Taran, S
Chaudhuri, BK
Sakata, H
Sun, CP
Huang, CL
Yang, HD
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (20) : 3757 - 3763
[16] Influence of BTO phase on structural, magnetic and electrical properties of LCMO
Keshri , Sunita
Joshi, Leena
Rout, Sanjeeb Kumar
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 485 (1-2) : 501 - 506
[17] Desirable magnetotransport properties in doped Mn-oxide-based superlattices
Kwon, C
Kim, KC
Robson, MC
Gu, JY
Rajeswari, M
Venkatesan, T
Ramesh, R
[J]. JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) : 4950 - 4952
[18] Magnetic and conductive dead layer at the La0.67Ca0.33MnO3-SrTiO3:Nb interface
Liang, S.
Sun, J. R.
Wang, J.
Shen, B. G.
[J]. APPLIED PHYSICS LETTERS, 2009, 95 (18)
[19] Microstructure of epitaxial La0.7Ca0.3MnO3 thin films grown on LaAlO3 and SrTiO3
Lu, CJ
Wang, ZL
Kwon, C
Jia, QX
[J]. JOURNAL OF APPLIED PHYSICS, 2000, 88 (07) : 4032 - 4043
[20] Large magnetotunneling effect at low magnetic fields in micrometer-scale epitaxial La0.67Sr.033MnO3 tunnel junctions
Lu, Y
Li, XW
Gong, GQ
Xiao, G
Gupta, A
Lecoeur, P
Sun, JZ
Wang, YY
Dravid, VP
[J]. PHYSICAL REVIEW B, 1996, 54 (12) : R8357 - R8360

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