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Low-Field Magnetoresistance Hysteresis of Magnetron Sputtered La0.7Ca0.3Mn O3 Thin Films

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Nano-Crystalline and Thin Film Magnetic Oxides

Part of the book series: NATO Science Series ((ASHT,volume 72))

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Abstract

Polycrystalline thin films of La0.7Ca0.3MnO3 with variable thickness (25nm<δ <200nm) have been obtained by magnetron sputtering on YSZ(100) and Si(100)/YSZ substrates. The influence of modified structure on magnetoresistance (MR) of manganite film has been investigated in the low magnetic field region. Well pronounced MR hysteresis has been registered for the first time for both magnetic field orientations - in-plane and perpendicular to plane direction. Temperature dependence of the hysteresis amplitude and the location of magnetoresistance peak have been found and compared with those of epitaxial films and of artificial grain boundaries. It is worth noting the high value of obtained MR sensitivity of simple single layer film structure at low magnetic field H<250 Oe and a wide temperature range - features in favour of memory application.

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© 1999 Springer Science+Business Media Dordrecht

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Vlakhov, E.S. et al. (1999). Low-Field Magnetoresistance Hysteresis of Magnetron Sputtered La0.7Ca0.3Mn O3 Thin Films. In: Nedkov, I., Ausloos, M. (eds) Nano-Crystalline and Thin Film Magnetic Oxides. NATO Science Series, vol 72. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4493-3_21

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  • DOI: https://doi.org/10.1007/978-94-011-4493-3_21

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-5873-2

  • Online ISBN: 978-94-011-4493-3

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