Magnetic and Structural Properties of Nd₂Fe₁₇₋ₓMnₓ Solid Solutions

Author

Peter C. Ezekwenna
G. K. Marasinghe
William Joseph James, Missouri University of Science and TechnologyFollow
Oran Allan Pringle, Missouri University of Science and TechnologyFollow
Gary J. Long, Missouri University of Science and TechnologyFollow
H. Luo
Z. Hu
William B. Yelon, Missouri University of Science and TechnologyFollow
Ph. I'Héritier

Abstract

A series of Nd₂Fe_17-xMn_x solid solutions with x values between 0 and and 6 were prepared and analyzed using magnetic measurements, neutron diffraction, and Mössbauer spectroscopy. All of the Nd₂Fe_17-xMn_x samples crystallized in the Th₂Zn_17-x-type rhombohedral structure. The lattice parameters and unit cell volumes decrease with increasing manganese content up to ∼ x equal to 2, and then increase for higher manganese content. The magnetizations of Nd₂Fe_17-xMn_x decrease with increasing manganese content and Nd₂Fe_17-xMn_x is paramagnetic at room temperature for x greater than 3. The Curie temperature in Nd₂Fe_17-xMn_x solid solutions is maximum for x equal to 0.5 and decreases at a rate of ∼ 10° per substituted manganese up to x equal to 3, after which it drops sharply. These results are discussed in terms of the manganese she occupancies in Nd₂Fe_17-xMn_x.

Recommended Citation

P. C. Ezekwenna et al., "Magnetic and Structural Properties of Nd₂Fe₁₇₋ₓMnₓ Solid Solutions," Journal of Applied Physics, vol. 81, no. 8, pp. 4533 - 4535, American Institute of Physics (AIP), Apr 1997.

The definitive version is available at https://doi.org/10.1063/1.364885

Department(s)

Chemistry

Second Department

Physics

International Standard Serial Number (ISSN)

0021-8979

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1997 American Institute of Physics (AIP), All rights reserved.

Publication Date

15 Apr 1997