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Anomalous magnetoresistance in NiMnGa thin films
Golub, Vladimir O. Vovk, Andriy Ya. Malkinski, Leszek O’Connor, Charles J. Wang, Zhenjun Tang, Jinke
Golub, Vladimir O.
Vovk, Andriy Ya.
Malkinski, Leszek
O’Connor, Charles J.
Wang, Zhenjun
Tang, Jinke
Abstract
Description
The origin of anomalous negative magnetoresistance and its temperature dependence in polycrystalline Ni–Mn–Ga films prepared by pulse laser deposition was studied. The investigation of structural, transports, magnetic, and ferromagnetic resonance properties of the films suggests contributions of different mechanisms in magnetotransport. At low magnetic fields the main contribution to magnetoresistance is due to the transport between the areas with different orientation of magnetic moments, while at high fields it is an electron scattering of in spin-disordered areas.
Date
2004-10-01
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University of Wyoming. Libraries
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Physical Sciences and Mathematics