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Magnetic and transport properties of La0.5Sr0.5(FexCo1-x)O-3 (0 <= x <= 0.2) perovskites
- Issue Date
- Jun-2004
- Publisher
- WILEY-V C H VERLAG GMBH
- Citation
- PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, v.241, no.7, pp 1573 - 1576
- Pages
- 4
- Journal Title
- PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
- Volume
- 241
- Number
- 7
- Start Page
- 1573
- End Page
- 1576
- ISSN
- 0370-1972
1521-3951
- Abstract
- The magnetic and transport properties of La0.5Sr0.5(FechiCo1-chi)O-3 (0 less than or equal to chi less than or equal to 0.2) compounds were investigated. T-C decreased slightly and the resistivity increased, even with a very small extent of Fe substitution. The Fe substitution induced additional antiferromagnetic Fe-O-Fe interactions that suppress strongly the ferromagnetism and conductivity, thus causing a separation between two phases at around 124 K for both x = 0.1 and 0.2 compositions. Spin-glass behavior was observed for the Fe-doped samples. The resistivity, p(T), can be described by the Mott's variable range hopping model in the low temperature region. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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