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Characterization on the Microstructure of γ-Ray Irradiated Nd2Fe14B Magnet

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Abstract:

The effect of 60Co γ-ray irradiation on the microstructure of Nd2Fe14B magnets was investigated with electron spin resonance (ESR) and thermal mechanical analyzer (TMA). When the 60Co γ-ray with dose from 0 Mrad to 100 Mrad was exposed to Nd2Fe14B magnet having different sizes at room temperature, the increased demagnetization properties of the Nd2Fe14B magnets were studied by Hall probe. For all samples, changed Curie temperature and micro-crystal structure of Nd2Fe14B magnet by γ-ray irradiation has been also studied. Moreover the strong and broad single line shaped ESR signal in the resonance magnetic field is attributed to unpaired electron of iron ions in the sample by the effect of γ-ray irradiation.

Keywords: ESR; GAMMA-RAY IRRADIATION; ND2FE14B MAGNET; TC

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2009.C033

Publication date: 2009-02-01

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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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