Spin Polarons at High Temperatures in Undoped Lanthanum Manganites

Abstract:

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Magnetic properties of undoped samples of lanthanum manganites in the temperature range 77-650K are reported. The ferromagnetic Curie temperature increases when the unit-cell volume decreases and the number of cation defects increases. Uncorrelated polarons and noninteracting moments of Mn ions are present in the region TC < T < 440K. Above 2TC < 440 K < T, the nonstoihiometric LaMnO3 compound passes into the homogeneous paramagnetic state.

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Periodical:

Solid State Phenomena (Volumes 168-169)

Main Theme:

Edited by:

V. Ustinov

Pages:

473-476

DOI:

10.4028/www.scientific.net/SSP.168-169.473

Citation:

T.I. Arbuzova et al., "Spin Polarons at High Temperatures in Undoped Lanthanum Manganites", Solid State Phenomena, Vols. 168-169, pp. 473-476, 2011

Online since:

December 2010

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$35.00

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