1. A single-crystal Mössbauer study of spin reorientations in the multiferroic HoFeO3
- Author
-
Zahra Yamani, Wei Ren, Shixun Cao, D. H. Ryan, Larissa Veryha, Quentin Stoyel, and Kai Xu
- Subjects
Diffraction ,Materials science ,Condensed matter physics ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Nuclear magnetic resonance ,0103 physical sciences ,X-ray crystallography ,Mössbauer spectroscopy ,Perpendicular ,Orthorhombic crystal system ,010306 general physics ,0210 nano-technology ,Spectroscopy ,Single crystal ,Spin-½ - Abstract
57Fe Mossbauer spectroscopy on single crystal slices has been used to study the spin reorientation transition that occurs in HoFeO3 for $35~\text {K} \leq T \leq 60$ K. We also prepared a powder sample for comparison and confirmed that the results were consistent between the two data sets. By using thin polished slices cut perpendicular to the three orthorhombic axes we have been able to follow $a$ - $\text {axis}\rightarrow c$ -axis reorientation in detail and confirm that moments also tip toward the $b$ −axis by ~ 20° before returning closer to the $ac$ −plane. We also show that the moments are never fully parallel or perpendicular to any of the three orthorhombic axes; a consequence of the mixed ferro-/antiferro-magnetic structure adopted by HoFeO3.
- Published
- 2017
- Full Text
- View/download PDF