Effects of processing on the sintering behavior microstructures, and properties of La0.67Sr0.33MnO3 doped with ZrO2

被引：6

作者：

Fang, TT ^{[1
]}

Wang, MT ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2003年 / 263卷 / 1-2期

关键词：

dopant; magnetoresistance; manganites; sintering; ZrO2;

D O I：

10.1016/S0304-8853(02)01565-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two different doping methods were used to study the effect of ZrO2 on the sintering behavior, microstructure, and properties of La0.67Sr0.33MnO3 (LSMO). For specimens of ZrO2-doped LSMO, it was found that the solubility of ZrO2 in LSMO is limited, so the properties are not much affected but the sintering behavior are influenced by the liquid phase of MnO2, the residue of ZrO2, and pore growth. For specimens of LSMZO, the significant substitution of Zr for Ti would reduce the densification rate, lower T-p and T-c, and. enhance magnetoresistance (MR). The mechanisms for the decrease of T-p and increase of MR are suggested. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：192 / 200

页数：9

共 33 条

[1] Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe [J].

Ahn, KH ;

Wu, XW ;

Liu, K ;

Chien, CL .

PHYSICAL REVIEW B, 1996, 54 (21) :15299-15302

[2] Colossal magnetoresistance of spin-glass perovskite La0.67Ca0.33Mn0.9Fe0.1O3 [J].

Cai, JW ;

Wang, C ;

Shen, BG ;

Zhao, JG ;

Zhan, WS .

APPLIED PHYSICS LETTERS, 1997, 71 (12) :1727-1729

[3] 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

[4] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[5] Ferromagnetic cluster behaviors and magnetoresistance in Ni-doped LaSrMnO3 systems [J].

Feng, JW ;

Hwang, LP .

APPLIED PHYSICS LETTERS, 1999, 75 (11) :1592-1594

[6] Transition-element doping effects in La0.7Ca0.3MnO3 [J].

Ghosh, K ;

Ogale, SB ;

Ramesh, R ;

Greene, RL ;

Venkatesan, T ;

Gapchup, KM ;

Bathe, R ;

Patil, SI .

PHYSICAL REVIEW B, 1999, 59 (01) :533-537

[7] Enhancement of room temperature magnetoresistance in Lao0.67Sr0.33Mn1-xTixO3 manganites [J].

Hu, JF ;

Qin, HW ;

Chen, J ;

Wang, ZX .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 90 (1-2) :146-148

[8] LATTICE EFFECTS ON THE MAGNETORESISTANCE IN DOPED LAMNO3 [J].

HWANG, HY ;

CHEONG, SW ;

RADAELLI, PG ;

MAREZIO, M ;

BATLOGG, B .

PHYSICAL REVIEW LETTERS, 1995, 75 (05) :914-917

[9] 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

[10] THOUSANDFOLD CHANGE IN RESISTIVITY IN MAGNETORESISTIVE LA-CA-MN-O FILMS [J].

JIN, S ;

TIEFEL, TH ;

MCCORMACK, M ;

FASTNACHT, RA ;

RAMESH, R ;

CHEN, LH .

SCIENCE, 1994, 264 (5157) :413-415

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