Negative magnetoresistance of (1–x)La0.7Sr0.3MnO3/x(GeO2, Li4P2O7) composite ceramics


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Abstract

Ceramics of (1–x)La0.7Sr0.3MnO3/x(GeO2) and (1–x)La0.7Sr0.3MnO3/x(Li4P2O7) compositions with x = 0.1–0.3 have been synthesized that possess high absolute values of isotropic negative magnetoresistance MR at room temperature. In a composite containing 20 mass % GeO2 as the barrier component, the negative magnetoresistance reaches MR = 15% in a magnetic field of 18 kOe, while an analogous composite with Li4P2O7 under identical conditions has MR = 16%.

About the authors

Yu. V. Kabirov

Southern Federal University

Author for correspondence.
Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

V. G. Gavrilyachenko

Southern Federal University

Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

A. S. Bogatin

Southern Federal University

Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

N. V. Lyanguzov

Southern Federal University

Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

T. V. Gavrilyachenko

Southern Federal University

Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

B. S. Medvedev

Southern Federal University

Email: salv62@mail.ru
Russian Federation, Rostov-on-Don, 344006

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