Crystal and Magnetic Structures of LaNi5−xMnx

Authors

C. Y. Tai, University of Missouri - Rolla
G. K. Marasinghe, University of Missouri - Rolla
O. A. Pringle, University of Missouri - Rolla
W. J. James, University of Missouri - Rolla
M. Chen, University of Missouri - Columbia
W. B. Yelon, University of Missouri - Columbia
I. Dubenko, Southern Illinois University Carbondale
N. Ali, Southern Illinois University Carbondale
Ph. I’Héritier, ENS de Physique de Grenoble

Comments

© 2000 American Institute of Physics

Published in Journal of Applied Physics, Vol. 87 No. 9 (2000) at doi: 10.1063/1.372823

Abstract

The crystallographic and magnetic properties of LaNi_5−xMn_x with x=1, 1.5, and 2, have been investigated using x-ray and neutron diffraction, vibrating sample magnetometer and superconducting quantum interference device measurements. All the samples crystallize in the hexagonal CaCu₅-type (P6/mmm) structure. Manganese atoms preferentially occupy the 3g site in the LaNi₅ structure. The bulk magnetization of the LaNi_5−xMn_x powder samples decreases rapidly as nickel is replaced by manganese. A ferrimagnetic model is applied to describe the magnetic structure of the LaNi_5−xMn_x samples for x=1.5 and 2. A ferromagnetic model gives the best fit of the neutron diffraction data for the LaNi₄Mn sample.

Recommended Citation

Tai, C. Y., Marasinghe, G. K., Pringle, O. A., James, W. J., Chen, M., Yelon, W. B., Dubenko, I., Ali, N. and I’Héritier, Ph.. "Crystal and Magnetic Structures of LaNi5−xMnx." (May 2000).