Giant magnetoresistance in La0.7Pb0.3MnO3 thin film

Автор(и)

  • S. I. Khartsev A. Galkin Physicotechnical Institute, National Academy of Sciences of the Ukraine,

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.593597

Ключові слова:

PACS:72.15.Gd, 75.50Cc,75.70Ak

Анотація

Epitaxial thin films of La0.7Pb0.3MnO3 have been grown on (100) LaAlO3 and (110) SrTiO3 substrates by dc magnetron sputtering. The magnetic-field and temperature-dependent resistivity of as-deposited and post-annealed films was examined. At H=10kOe the maximum observed magnetoresistance ratio (R0-RH)/R0 was 62%. The bolometric response to 0.94- m low-frequency modulated radiation in the film with the temperature coefficient of resistance dlnR/dT= 14% was studied. The transport properties are described using Zhang`s spin-polaron theory. An unusual approach to stabilizing the film temperature at the point corresponding to the maximum of the magnetoresistance ratio and responsivity is discussed.

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Опубліковано

1998-05-10

Як цитувати

(1)
S. I. Khartsev, Giant magnetoresistance in La0.7Pb0.3MnO3 thin film, Low Temp. Phys. 24, (1998) [Fiz. Nizk. Temp. 24, 457-461, (1998)] DOI: https://doi.org/10.1063/1.593597.

Номер

Том 24 № 5 (1998)

Розділ

Низькотемпературний магнетизм

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