TY - JOUR
T1 - Investigation of spin reorientation in YMn1-xFexO3 (x=0.55, 0.6, 0.7, 0.8, 0.9, and 1.0) by Mössbauer spectroscopy
AU - Lim, Jung Tae
AU - Choi, Young Jai
AU - Kim, Chul Sung
N1 - Publisher Copyright:
© 2015 AIP Publishing LLC.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015/5/7
Y1 - 2015/5/7
N2 - YMn1-xFexO3 (x=0.55, 0.6, 0.7, 0.8, 0.9, and 1.0) polycrystalline samples were prepared by the solid-state-reaction method. The crystal structure and magnetic properties of samples were investigated with x-ray diffractometer (XRD), vibrating sample magnetometer, and Mössbauer spectroscopy. The XRD patterns at 295K, analyzed by Rietveld refinement method, showed that all samples were single-phased orthorhombic of Pnma with both Bragg (RB) and structure (RF) factors less than 5%. Mössbauer spectra of all samples were obtained at various temperatures ranging from 4.2 to 500K, and the spectra below TC were fitted by least-square method as a function of the Fe and Mn distribution. Isomer shift (δ) values of all samples indicated that the charge states were Fe3+. In addition, temperature-dependent hyperfine field (Hhf), averaged electric quadrupole shift EQ, and averaged isomer shift δ have shown abrupt changes around TSR due to the change in the charge state of Mn ions.
AB - YMn1-xFexO3 (x=0.55, 0.6, 0.7, 0.8, 0.9, and 1.0) polycrystalline samples were prepared by the solid-state-reaction method. The crystal structure and magnetic properties of samples were investigated with x-ray diffractometer (XRD), vibrating sample magnetometer, and Mössbauer spectroscopy. The XRD patterns at 295K, analyzed by Rietveld refinement method, showed that all samples were single-phased orthorhombic of Pnma with both Bragg (RB) and structure (RF) factors less than 5%. Mössbauer spectra of all samples were obtained at various temperatures ranging from 4.2 to 500K, and the spectra below TC were fitted by least-square method as a function of the Fe and Mn distribution. Isomer shift (δ) values of all samples indicated that the charge states were Fe3+. In addition, temperature-dependent hyperfine field (Hhf), averaged electric quadrupole shift EQ, and averaged isomer shift δ have shown abrupt changes around TSR due to the change in the charge state of Mn ions.
UR - http://www.scopus.com/inward/record.url?scp=84928545371&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928545371&partnerID=8YFLogxK
U2 - 10.1063/1.4918564
DO - 10.1063/1.4918564
M3 - Article
AN - SCOPUS:84928545371
VL - 117
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 17
M1 - 17D918
ER -