Anomalies in magnetoelastic properties of DyFe{sub 11.2}Nb{sub 0.8} compound

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4907614· OSTI ID:22410000

Md Din, M. F.; Cheng, Z. X.; Dou, S. X. ^[1]; Kennedy, S. J. ^[2]; Campbell, S. J. ^[3]; Kimpton, J. A. ^[4]

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1. Institute for Superconductivity and Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522 (Australia)
2. Bragg Institute, ANSTO, Lucas Heights, New South Wales 2234 (Australia)
3. School of Physical, Environmental and Mathematical Sciences, The University of New South Wales, Canberra, Australian Capital Territory 2600 (Australia)
4. Australian Synchrotron, 800 Blackburn Rd., Clayton 3168 (Australia)

The structural and magnetic properties of DyFe{sub 11.2}Nb{sub 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{sub sr2} (∼202 K), then to easy plane at T{sub 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 {sup 57}Fe hyperfine interaction parameters and magnetic moments values have been determined for the 8i, 8j, and 8f sites from the Mössbauer spectra.

• OSTI ID: 22410000
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ANISOTROPY
CRYSTAL STRUCTURE
DYSPROSIUM ALLOYS
IRON 57
IRON BASE ALLOYS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MOESSBAUER EFFECT
NIOBIUM ALLOYS
SPIN
TEMPERATURE RANGE 0273-0400 K
THERMAL EXPANSION
TRANSITION TEMPERATURE
X-RAY DIFFRACTION