Low-field magnetoresistance in La0.7Sr0.3MnO3/BaTiO3 composites

被引：7

作者：

Thanh, T. D. ^{[1
,2
,3
]}

Phong, P. T. ^{[4
]}

Manh, D. H. ^{[3
]}

Khien, N. V. ^{[5
]}

Hong, L. V. ^{[3
]}

Phan, T. L. ^{[1
,2
]}

Yu, S. C. ^{[1
,2
]}

机构：

[1] Chungbuk Natl Univ, Phys Program BK 21, Chonju 361763, South Korea

[2] Chungbuk Natl Univ, Dept Phys, Chonju 361763, South Korea

[3] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

[4] Nha Trang Pedag Coll, Dept Nat Sci, Nha Trang, Khanh Hoa, Vietnam

[5] Thai Nguyen Univ, Coll Sci, Dept Phys, Thai Nguyen, Vietnam

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2013年 / 24卷 / 04期

关键词：

TEMPERATURE-COEFFICIENT; ELECTRICAL-TRANSPORT; MAGNETOTRANSPORT; RESISTANCE;

D O I：

10.1007/s10854-012-0943-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A manganite composite series of (1 - x)La0.7Sr0.3MnO3/xBaTiO(3) (x = 0, 0.06, 0.12, and 0.18) has been fabricated by solid-state reaction combined with a high-energy mechanical milling method. Experimental results revealed that the insulator-metal transition temperature was shifted towards lower temperatures, and resistivity increases with increasing BaTiO3 content in (1 - x)La0.7Sr0.3MnO3/xBaTiO(3). Meanwhile, the ferromagnetic-paramagnetic transition temperature was almost unchanged. The increase in magnetoresistance was observed in the all composites at whole measurement temperatures under an applied magnetic field of 3 kOe. Here, temperature dependences of magnetoresistance display a Curie-Weiss law-like behavior. The nature of this phenomenon is explained in detail.

引用

页码：1389 / 1394

页数：6

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