センダストおよびアルパームのNMR測定

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タイトル別名
  • NMR Study of Sendust and Alperm
  • センダスト オヨビ アルパーム ノ NMR ソクテイ

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The Fe73.74Si16.56Al9.70 (Sendust) and Fe73Al27 (Alperm) alloys with soft magnetic properties were investigated by using a spin-echo method of nuclear magnetic resonance, a magnetic balance and an X-ray diffractometer. The D03-type and B2-type alloys have been made by heat-treatments and the forced process strain.<BR>The NMR spectrum is divided into two different frequency regions of which boundary is around 50 MHz. At the low frequency side, the spectrum with Sendust D03-type shows an intense peak at 18 MHz for 27Al nuclei, the peaks at 28 and 46 MHz for 57Fe nuclei, and a peak at 31 MHz for 21Si nuclei. The spectrum of B2-type shows three peaks at 25, 32 and 40 MHz for 27Al nuclei.<BR>The spectrum of the Alperm D03-type shows an intense peak centered at 29 MHz and two weak peaks for the 27Al nuclei, and a weak peak at 46 MHz for 57Fe nuclei. The spectrum of the B2-type shows a broad peak centering at 36 MHz and two weak peaks for 27Al nuclei. These alloys exhibit peculiar spectra for the different crystal structure types.<BR>At the high frequency side, the spectra of all alloys show a similar broadening distribution. It is considered that aluminum atoms are distributed at several sites depending on the deviation from the stoichiometric composition and disorder arrangements, because the hyperfine field of aluminum is influenced by iron.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 57 (3), 320-324, 1993

    公益社団法人 日本金属学会

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