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Magnetic Properties and Phase Change Features in Fe-Doped Ge–Sb–Te

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The relationship between magnetic property and phase change features in Fe-doped Ge–Sb–Te has been studied. Fe-doped Ge–Sb–Te is a phase change magnetic material, which exhibits a fast phase change feature and different magnetic, optical and electrical properties between amorphous and crystalline states. However, the crystallization temperature increases and crystallization rate drops with an increase of Fe doping content. Fe doping content should be less than the solid solubility limit so that Fe-doped Ge–Sb–Te has both magnetic property and phase change features. Fe-doped Ge–Sb–Te at crystalline state shows p-type conduction and has a high hole concentration. The Ruderman-Kittel-Kasuya-Yosida indirect interaction via carriers is the origin of the ferromagnetism in Fe-doped Ge–Sb–Te.


Document Type: Research Article


Publication date: 2011-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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