Anomalies in magnetoelastic properties of DyFe11.2Nb0.8 compound

Authors

Jianli Wang, University of WollongongFollow
M F. Md Din, University of WollongongFollow
Shane J. Kennedy, ANSTO, Bragg Institute, AnstoFollow
Zhenxiang Cheng, University of WollongongFollow
Stewart J. Campbell, University of New South WalesFollow
Justin A. Kimpton, Australian Synchotron
S X. Dou, University of WollongongFollow

RIS ID

98117

Publication Details

Wang, J. L., Md Din, M. F., Kennedy, S. J., Cheng, Z. X., Campbell, S. J., Kimpton, J. A. & Dou, S. X. (2015). Anomalies in magnetoelastic properties of DyFe11.2Nb0.8 compound. Journal of Applied Physics, 117 (17), 17C109-1-17C109-4.

Abstract

The structural and magnetic properties of DyFe_11.2Nb_0.8 compound have been investigated by high intensity, high resolution synchrotron x-ray diffraction, ac magnetic susceptibility, and dc magnetization measurements as well as Mössbauer spectroscopy (5-300 K). The easy magnetization direction at room temperature is along the c-axis. With decreasing temperature, the magnetocrystalline anisotropy changes from easy-axis to easy-cone at T_sr2 (∼202 K), then to easy plane at T_sr1 (∼94 K). The thermal expansion coefficient obtained from the synchrotron x-ray study exhibits clear anomalies around both of the spin reorientation transition temperatures. The ⁵⁷Fe hyperfine interaction parameters and magnetic moments values have been determined for the 8i, 8j, and 8f sites from the Mössbauer spectra.

Grant Number

ARC/DP0879070, ARC/DP110102386

Additional Grant Number

http://purl.org/au-research/grants/arc/DP0879070

http://purl.org/au-research/grants/arc/DP110102386