Intragrain and intergrain magnetoresistance in Mn, Fe/Mo and Co simple, double and oxygen deficient perovskite oxides

被引：21

作者：

Maignan, A ^{[1
]}

Martin, C ^{[1
]}

Hervieu, M ^{[1
]}

Raveau, B ^{[1
]}

机构：

[1] Univ Carn, CNRS, UMR 6508, ISMRa,Lab CRISMAT, F-14050 Caen, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 211卷 / 1-3期

关键词：

magnetoresistance; manganese; cobalt; iron; molybdenum; oxide; perovskite;

D O I：

10.1016/S0304-8853(99)00730-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several different transition metal oxides with structures derived from the perovskite show magnetoresistance (MR) properties. Both Ln(1-x)A(x)MnO(3) manganites and Sr2FeMoO6 double-perovskites exhibit two kinds of MR: intrinsic (intragrain) in the vicinity of their Curie temperature T-C and extrinsic (intergrain) below T-C. The former one, colossal in the case of manganites, requires large magnetic field values (tesla or above) whereas the second one, which originates in the tunneling across a barrier (grain-boundary) of the spin-polarized carriers, is shown even in low magnetic fields. The origin of MR properties of Ln(1-x)A(x)CoO(3-delta) cobaltites differs from that of the Mn and Fe/Mo-based oxides. Ln particular, no low-field MR is shown. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 179

页数：7

共 22 条

[1] A CLASS OF COBALT OXIDE MAGNETORESISTANCE MATERIALS DISCOVERED WITH COMBINATORIAL SYNTHESIS [J].

BRICENO, G ;

CHANG, HY ;

SUN, XD ;

SCHULTZ, PG ;

XIANG, XD .

SCIENCE, 1995, 270 (5234) :273-275

[2] MAGNETORESISTANCE IN MAGNETIC MANGANESE OXIDE WITH INTRINSIC ANTIFERROMAGNETIC SPIN STRUCTURE [J].

CHAHARA, K ;

OHNO, T ;

KASAI, M ;

KOZONO, Y .

APPLIED PHYSICS LETTERS, 1993, 63 (14) :1990-1992

[3] Antiparallel ordering of Mn and Nd magnetic moments in Nd0.7Ba0.3MnO3 [J].

Fauth, F ;

Suard, E ;

Martin, C ;

Millange, F .

PHYSICA B, 1997, 241 :427-429

[4]

GALASSO FS, 1969, STRUCTURE PROPERITES

[5] 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

[6] Pressure effects on the magnetoresistance in doped manganese perovskites [J].

Hwang, HY ;

Palstra, TTM ;

Cheong, SW ;

Batlogg, B .

PHYSICAL REVIEW B, 1995, 52 (21) :15046-15049

[7] Huge anisotropic magnetostriction in La1-xSrxCoO3-δ (x≥0.3):: Field-induced orbital instability [J].

Ibarra, MR ;

Mahendiran, R ;

Marquina, C ;

Garcia-Landa, B ;

Blasco, J .

PHYSICAL REVIEW B, 1998, 57 (06) :R3217-R3220

[8] LARGE MAGNETORESISTANCE IN POLYCRYSTALLINE LA-Y-CA-MN-O [J].

JIN, S ;

OBRYAN, HM ;

TIEFEL, TH ;

MCCORMACK, M ;

RHODES, WW .

APPLIED PHYSICS LETTERS, 1995, 66 (03) :382-384

[9] Role of grain boundaries in double exchange manganite oxides La(1-x)A(x)MnO(3) (A=Ba, Ca) [J].

Ju, HL ;

Sohn, H .

SOLID STATE COMMUNICATIONS, 1997, 102 (06) :463-466

[10] Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure [J].

Kobayashi, KL ;

Kimura, T ;

Sawada, H ;

Terakura, K ;

Tokura, Y .

NATURE, 1998, 395 (6703) :677-680

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