Effects of Ga substitution for Fe on the structure and magnetic properties of Nd_8.4Fe_87.1-xGa_xB_4.5 (x = 0–2.2) alloys prepared by mechanical alloying

Authors

B.Z. Cui, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
X.K. Sun, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
W. Liu, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
Z.D. Zhang, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
D.Y. Geng, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
X.G. Zhao, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People’s Republic of China
J. Ping Liu, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

5-1-2000

Comments

Published by American Institute of Physics. J. Appl. Phys. 87, 5335 (2000). ©2000 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

The effects of a partial substitution of Ga for Fe on the structure and magnetic properties of mechanically alloyed Nd_8.4Fe_87.1B_4.5 were studied. With increasing Ga content, the magnetic properties of the nanocomposite magnets first improve, reach maxima at 1.1 at.% Ga, and then degrade. The addition of Ga helps to control the morphology, especially the grain sizes of both α -Fe and Nd₂Fe₁₄B.