In-plane grain boundary effects on the magnetotransport properties of La0.7Sr0.3MnO3-δ

被引：76

作者：

Gu, JY ^{[1
]}

Ogale, SB

Rajeswari, M

Venkatesan, T

Ramesh, R

Radmilovic, V

Dahmen, U

Thomas, G

Noh, TW

机构：

[1] Univ Maryland, Dept Phys, Ctr Superconduct Res, College Pk, MD 20742 USA

[2] Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA

[3] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[4] Univ Maryland, Dept Elect Engn, College Pk, MD 20742 USA

[5] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 72卷 / 09期

关键词：

D O I：

10.1063/1.120940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

C-axis oriented La0.7Sr0.3MnO3-delta (LSMO) films were fabricated on the top of SrTiO3/YBa2Cu3O7 grown on MgO (001) substrates. From x-ray phi-scan and planar transmission electron microscopy measurements, the LSMO layer in the LSMO/SrTiO3/YBa2Cu3O7/MgO heterostructure is found to have coherent in-plane grain boundaries with a predominance of 45 degrees rotations (between [100] and [110] grains) in addition to the cube-on-cube epitaxial relationship. Also, epitaxial LSMO/Bi4Ti3O12/LaAlO3 (001) and c-axis textured LSMO/Bi4Ti3O12/SiO2/Si (001) with random in-plane grain boundaries are introduced as the counterparts for comparison. The resistivity and magnetoresistance (MR) of LSMO layer were measured and compared. The low field MR at low temperature shows a dramatic dependence on the nature of the grain boundary. An attempt is made to interpret these results on the basis of correlation between the magnetic properties and grain structures. (C) 1998 American Institute of Physics.

引用

页码：1113 / 1115

页数：3

共 10 条

[1] Growth and properties of c-axis textured La0.7Sr0.3MnO3-delta films on SiO2/Si substrates with a Bi4Ti3O12 template layer [J].

Gu, JY ;

Kwon, C ;

Robson, MC ;

Trajanovic, Z ;

Ghosh, K ;

Sharma, RP ;

Shreekala, R ;

Rajeswari, M ;

Venkatesan, T ;

Ramesh, R ;

Noh, TW .

APPLIED PHYSICS LETTERS, 1997, 70 (13) :1763-1765

[2] Grain-boundary effects on the magnetoresistance properties of perovskite manganite films [J].

Gupta, A ;

Gong, GQ ;

Xiao, G ;

Duncombe, PR ;

Lecoeur, P ;

Trouilloud, P ;

Wang, YY ;

Dravid, VP ;

Sun, JZ .

PHYSICAL REVIEW B, 1996, 54 (22) :15629-15632

[3] TRANSPORT-MAGNETISM CORRELATIONS IN THE FERROMAGNETIC OXIDE LA0.7CA0.3MNO3 [J].

HUNDLEY, MF ;

HAWLEY, M ;

HEFFNER, RH ;

JIA, QX ;

NEUMEIER, JJ ;

TESMER, J ;

THOMPSON, JD ;

WU, XD .

APPLIED PHYSICS LETTERS, 1995, 67 (06) :860-862

[4] Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].

Hwang, HY ;

Cheong, SW ;

Ong, NP ;

Batlogg, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044

[5] Low-field magnetoresistive properties of polycrystalline and epitaxial perovskite manganite films [J].

Li, XW ;

Gupta, A ;

Xiao, G ;

Gong, GQ .

APPLIED PHYSICS LETTERS, 1997, 71 (08) :1124-1126

[6] Large low-field magnetoresistance in La0.7Ca0.3MnO3 induced by artificial grain boundaries [J].

Mathur, ND ;

Burnell, G ;

Isaac, SP ;

Jackson, TJ ;

Teo, BS ;

MacManusDriscoll, JL ;

Cohen, LF ;

Evetts, JE ;

Blamire, MG .

NATURE, 1997, 387 (6630) :266-268

[7] EPITAXY OF Y-BA-CU-O THIN-FILMS GROWN ON SINGLE-CRYSTAL MGO [J].

RAMESH, R ;

HWANG, D ;

RAVI, TS ;

INAM, A ;

BARNER, JB ;

NAZAR, L ;

CHAN, SW ;

CHEN, CY ;

DUTTA, B ;

VENKATESAN, T ;

WU, XD .

APPLIED PHYSICS LETTERS, 1990, 56 (22) :2243-2245

[8] Influence of a 36.8 degrees grain boundary on the magnetoresistance of La0.8Sr0.2MnO3-delta single crystal films [J].

Steenbeck, K ;

Eick, T ;

Kirsch, K ;

ODonnell, K ;

Steinbeiss, E .

APPLIED PHYSICS LETTERS, 1997, 71 (07) :968-970

[9] INTERACTION BETWEEN THE D-SHELLS IN THE TRANSITION METALS .2. FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE [J].

ZENER, C .

PHYSICAL REVIEW, 1951, 82 (03) :403-405

[10] Tunnel-type giant magnetoresistance in the granular perovskite La0.85Sr0.15MnO3 [J].

Zhang, N ;

Ding, WP ;

Zhong, W ;

Xing, DY ;

Du, YW .

PHYSICAL REVIEW B, 1997, 56 (13) :8138-8142

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