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Magnetic and Electrical Transport Properties of Ln0.8Sr0.2(Co1—xFex)O3 (Ln = La, Nd, Sm, Eu, 0.03 ≤ x ≤ 0.12) by T. K. Solovykh; I. O. Troyanchuk; D. D. Khalyavin; H. Szymczak; K. Piotrowski is a Materials Science article available to read on EtoBox.

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Electrical transport and magnetic behavior of the perovskite system Ln 0X8 Sr 0X2 (Co 1Àx Fe x )O 3 , where Ln = La, Nd, Sm, Eu; x 0.12 is reported. It is shown that both substitutions of lanthanium by rare-earth ions and cobalt by iron lead to the destruction of ferromagnetic ordering and an increase of the magnetoresistance. The La 0X8 Sr 0X2 (Co 1Àx Fe x )O 3 (x 0.06) compounds exhibit a met-al±insulator transition near the Curie temperature whereas rare-earth perovskites are semiconductors. In contrast to previous reports on the La 0X8 Sr 0X2 (Co 1Àx Fe x )O 3 system we did not observe large magnetoresistance above 77 K.

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Author

T. K. Solovykh; I. O. Troyanchuk; D. D. Khalyavin; H. Szymczak; K. Piotrowski

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley; Wiley - V C H Verlag GmbbH & Co. (ISSN 0031-8965)

Published

1999

Language

EN

Field

Materials Science (Physical Sciences)