FE-57 MOSSBAUER INVESTIGATIONS ON THE DY0.73TB0.27FE2-XNIX AND HO0.85TB0.15FE2-YNIY SYSTEMS

被引：28
作者：
KUMAR, MS
REDDY, KV
RAO, KVSR
DAS, TP
机构：
[1] INDIAN INST TECHNOL,DEPT PHYS,MAGNETISM & MAGNET MAT LAB,MADRAS 600036,TAMIL NADU,INDIA
[2] SUNY ALBANY,DEPT PHYS,ALBANY,NY 12222
来源：
PHYSICAL REVIEW B | 1995年 / 52卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.52.6542
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fe-57 Mossbauer studies were carried out on the Dy0.73Tb0.27Fe2-xNix and Ho(0.85)Tbo(0.15)Fe(2-y)Ni(y) systems (x = y = 0, 0.5,1.0,1.5). The spectra were recorded in the temperature range 18-675 K. The variation of hyperfine field at 18 K with Ni concentration showed a maximum at x = 0.5 as well as y = 0.5 which has been attributed to the narrowing of the 3d bands by the substitution of Ni. The Curie temperatures were estimated for all values of x and y from the temperature dependence of the average hyperfine field, which followed the Brillouin function. A monotonic decrease in Curie temperature with Ni concentration is observed and this is attributed to the decrease in net transition-metal sublattice moment. From the Mossbauer spectra, spin reorientation transitions have been observed for compositions with x = y = 0, 0.5, and 1.0.
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页码：6542 / 6549
页数：8
相关论文
共 32 条
  • [1] Clark A.E., Ferromagnetic Materials, 1, (1980)
  • [2] Koon N.C., Williams C.M., Das B.N., J. Magn. Magn. Mater., 100, (1991)
  • [3] Clark A.E., Belson H.S., Magnetism and Magnetic Materials, (1972)
  • [4] Koon N.C., Schindler A.I., Williams C.M., Carter F.L., J. Appl. Phys., 45, (1974)
  • [5] Buschow K.H.J., Rep. Prog. Phys., 40, (1977)
  • [6] Taylor K.N.R., Adv. Phys., 20, (1971)
  • [7] Mansey R.C., Raynor G.V., Harris I.R., J. Less-Common Met., 14, (1968)
  • [8] Christopher J.T., Piercy A.R., Taylor N.R., J. Less-Common Met., 17, (1969)
  • [9] Burzo E., Solid State Commun., 18, (1976)
  • [10] Muraoka Y., Shiga M., Nakamura Y., Phys. Status Solidi A, 42, (1977)
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