中国物理B ›› 1993, Vol. 2 ›› Issue (7): 537-543.doi: 10.1088/1004-423X/2/7/008

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CRYSTALLOGRAPHIC STRUCTURE AND INTRINSIC MAGENTIC PROPERTIES OF R2Fe14BNx

张晓东1, 潘琪1, 董生智1, 葛森林1, 杨应昌1, 杨继廉2, 张百生2, 丁永凡2, 叶春堂2   

  1. (1)Department of Physics, Peking University, Beijing 100871, China; (2)Institute of Atomic Energy, Academia Sinica, Beijing 102413, China
  • 收稿日期:1992-04-06 修回日期:1992-12-28 出版日期:1993-07-20 发布日期:1993-07-20
  • 基金资助:
    Project Supported by the National Natural Science Foundation of China, the Doctoral Program Foundation of Institution of Higher Education and the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

CRYSTALLOGRAPHIC STRUCTURE AND INTRINSIC MAGENTIC PROPERTIES OF R2Fe14BNx

ZHANG XIAO-DONG (张晓东)a, PAN QI (潘琪)a, DONG SHENG-ZHI (董生智)a, GE SEN-LIN (葛森林)a, YANG YING-CHANG (杨应昌)a, YANG JI-LIAN (杨继廉)b, ZHANG BAI-SHENG (张百生)b, DING YONG-FAN (丁永凡)b, YE CHUN-TANG (叶春堂)b   

  1. a Department of Physics, Peking University, Beijing 100871, China; b Institute of Atomic Energy, Academia Sinica, Beijing 102413, China
  • Received:1992-04-06 Revised:1992-12-28 Online:1993-07-20 Published:1993-07-20
  • Supported by:
    Project Supported by the National Natural Science Foundation of China, the Doctoral Program Foundation of Institution of Higher Education and the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

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摘要： We found that the nitrogen atoms can enter into the R2Fe14B structure by a proper heat treatment in nitrogen atmosphere. The crystallographic structure and magnetic properties of R2Fe14BNx, R =Nd and Y, have been investigated by using X-ray and neutron diffraction techniques as well as magnetic measurements. The neutron diffrac-tion data show that the nitrogen atoms occupy the 4f interstices. The interstitial nitrogen atoms were found to have an effect of enhancing Curie temerature, whereas, decreasing saturation magnetization and magneto-crystalline anisotropy. The rela-tionship of the crystal structure and the intrinsic magnetic properties of this crystal is discussed.

Abstract: We found that the nitrogen atoms can enter into the R2Fe14B structure by a proper heat treatment in nitrogen atmosphere. The crystallographic structure and magnetic properties of R2Fe14BNx, R =Nd and Y, have been investigated by using X-ray and neutron diffraction techniques as well as magnetic measurements. The neutron diffrac-tion data show that the nitrogen atoms occupy the 4f interstices. The interstitial nitrogen atoms were found to have an effect of enhancing Curie temerature, whereas, decreasing saturation magnetization and magneto-crystalline anisotropy. The rela-tionship of the crystal structure and the intrinsic magnetic properties of this crystal is discussed.

中图分类号:  (Inorganic compounds)

  • 61.66.Fn
81.40.Gh (Other heat and thermomechanical treatments) 61.72.J- (Point defects and defect clusters) 75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.30.Gw (Magnetic anisotropy) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)