中国物理B ›› 1997, Vol. 6 ›› Issue (6): 440-444.doi: 10.1088/1004-423X/6/6/006

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MAGNETIC PROPERTIES OF Dy2Fe17-xCrx AND Er2Fe17-xCrx(x=0-3)COMPOUNDS

郝延明, 严启伟, 张泮霖, 孙向东, 王芳卫, 沈保根   

  1. State Key Laboratory of Magnetism, Center for Condensed Matter Physics, Institute of Physics, Academia Sinca, Beijing 100080, China
  • 收稿日期:1996-02-12 修回日期:1996-12-23 出版日期:1997-06-20 发布日期:1997-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

MAGNETIC PROPERTIES OF Dy2Fe17-xCrx AND Er2Fe17-xCrx(x=0-3)COMPOUNDS

HAO YAN-MING (郝延明), YAN QI-WEI (严启伟), ZHANG PAN-LIN (张泮霖), SUN XIANG-DONG (孙向东), WANG FANG-WEI (王芳卫), SHEN BAO-GEN (沈保根)   

  1. State Key Laboratory of Magnetism, Center for Condensed Matter Physics, Institute of Physics, Academia Sinca, Beijing 100080, China
  • Received:1996-02-12 Revised:1996-12-23 Online:1997-06-20 Published:1997-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： The crystal structure and magnetic properties of R2Fe17-xCrx(R=Dy,Er,0≤x≤3) compounds have been investigated by me ans of X-ray diffraction and magnetization measurements. These compounds have hexagonal Th2Ni17-type structure. The unit-cell volumes decrease with the increase of Cr concentration x. The Curie temperature Tc of the Er2Fe17-xCrx compounds increases from 320 K for x=0 to 403 K for x=1.0 and then decreases with further increase of x. The Cur ie temperat ure Tc of Dy2Fe17-xCrx compounds increases from 364 K for x=0 to 435 K for x=1.0 and then decreases with further increase of x. The saturation magnetization of these compounds shows an approximately linear decrease with the increase of x. Spin reorientation transitions occur s in Er2Fe17-xCrx(x=2.0 and 3.0).

Abstract: The crystal structure and magnetic properties of R2Fe17-xCrx(R=Dy,Er,0≤x≤3) compounds have been investigated by me ans of X-ray diffraction and magnetization measurements. These compounds have hexagonal Th2Ni17-type structure. The unit-cell volumes decrease with the increase of Cr concentration x. The Curie temperature Tc of the Er2Fe17-xCrx compounds increases from 320 K for x=0 to 403 K for x=1.0 and then decreases with further increase of x. The Cur ie temperat ure Tc of Dy2Fe17-xCrx compounds increases from 364 K for x=0 to 435 K for x=1.0 and then decreases with further increase of x. The saturation magnetization of these compounds shows an approximately linear decrease with the increase of x. Spin reorientation transitions occur s in Er2Fe17-xCrx(x=2.0 and 3.0).

中图分类号:  (Alloys )

  • 61.66.Dk
75.30.Cr (Saturation moments and magnetic susceptibilities) 75.50.Bb (Fe and its alloys) 61.05.cp (X-ray diffraction) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))