@article{6160debbaeb9465eba96ddd17e078448,
title = "Identifying valency and occupation sites of Ir dopants in antiferromagnetic α-Fe2O3 thin films with X-ray absorption fine structure and M{\"o}ssbauer spectroscopy",
abstract = "A combined analysis of Ir-doped α-Fe2O3 (001) films, which show a drastic enhancement in the Morin transition temperature as a result of Ir doping, was performed by employing X-ray absorption near edge structure (XANES), extended X-ray absorption fine structure (EXAFS), and M{\"o}ssbauer spectroscopy analyses at room temperature. The M{\"o}ssbauer spectra reveal that the valency of Fe remains 3+ after Ir doping. The XANES spectra indicate that the valency of the Ir ion in Ir-doped α-Fe2O3 varies from 3+ to 4+. The EXAFS analysis results clarified that the Ir ions occupy the Fe-sites of α-Fe2O3. These findings help elucidate the mechanism for controlling the Morin transition temperature in α-Fe2O3 films toward antiferromagnetic spintronic applications.",
author = "Tomohiro Nozaki and Pati, {Satya Prakash} and Yohei Shiokawa and Motohiro Suzuki and Toshiaki Ina and Ko Mibu and Muftah Al-Mahdawi and Shujun Ye and Masashi Sahashi",
note = "Funding Information: The authors would like to thank Dr. K. Nitta and Dr. H. Imamura for fruitful discussion. The XAFS experiments were performed at the SPring-8 synchrotron radiation facility with the approval of JASRI (Proposal No. 2015B1006 and 2016A1030). The M{\"o}ssbauer measurement was performed at the Nagoya Institute of Technology under the Nanotechnology Platform Program of MEXT, Japan. This work was partly funded by the ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Japan Government) and by JSPS KAKENHI (Grant No. 16H05975). Publisher Copyright: {\textcopyright} 2019 Author(s).",
year = "2019",
month = mar,
day = "21",
doi = "10.1063/1.5080483",
language = "English",
volume = "125",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "11",
}