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Comparison of the crystallographic and magnetic properties between Tb2Fe16.46Cr1.23 and Tb3(Fe,Cr)29 single crystals

Published online by Cambridge University Press:  31 January 2011

C. P. Yang ,
Y. Z. Wang ,
G. H. Wu ,
B. P. Hu ,
X. F. Han ,
Z. L. Jiang ,
C. L. Ma  and
J. Zhu
C. P. Yang*
Affiliation:
Department of Material Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China, and State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Y. Z. Wang
Affiliation:
State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China, and San Huan Research Laboratory, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080, People's Republic of China
G. H. Wu
Affiliation:
State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
B. P. Hu
Affiliation:
San Huan Research Laboratory, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080, People's Republic of China
X. F. Han
Affiliation:
State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Z. L. Jiang
Affiliation:
Department of Material Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
C. L. Ma
Affiliation:
Department of Material Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
J. Zhu
Affiliation:
Department of Material Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel Tb3(Fe,Cr)29 single crystal, which has a monoclinic Nd3(Fe,Ti)29-type structure, is obtained using the Czochralski method by performing a proper heat treatment on the Tb2Fe16.46Cr1.23 crystal with a Th2Ni17-type structure. Thermomagnetic curves along the easy axis and magnetization curves along the easy and hard axes are presented for both crystals. The lattice parameters are a = 1.058 nm, b = 0.848 nm, c = 0.968 nm, α = γ = 90°, and β = 96.93° for the Tb3(Fe,Cr)29 single crystal. The Curie temperatures, saturation magnetizations, and magnetocrystalline anisotropy constants are compared between the Tb-2:17 and Tb-3:29 crystals. The magnetization behavior along the hard axis is quite different as a first-order magnetization process (FOMP) of type I for the Tb-2:17, but a FOMP of type II for the Tb-3:29 crystal is observed below room temperature. At low temperatures, magnetohistory effects are detected for both crystals.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 11 , November 1999 , pp. 4195 - 4199
Copyright
Copyright © Materials Research Society 1999

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References

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