Mössbauer study of hyperfine interactions in EuFe 2 (As 1−x P x ) 2 and BaFe 2 (As 1−x P x ) 2

Autor:	Maarit Karppinen, Girish C. Tewari, Johan Lindén, Otto Mustonen, Eeva-Leena Rautama, Anastasia Sklyarova
Rok vydání:	2015
Předmět:	Superconductivity Crystallography Tetragonal crystal system Materials science Condensed matter physics Magnetism Phase (matter) Mössbauer spectroscopy Mossbauer spectra Condensed Matter Physics Pnictogen Hyperfine structure Electronic Optical and Magnetic Materials
Zdroj:	Journal of Magnetism and Magnetic Materials. 378:327-332
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2014.11.054
Popis:	The magnetic properties of the pnictide superconductors with the nominal composition of BaFe 2 (As 0.68 P 0.32 ) 2 and EuFe 2 (As 0.8 P 0.2 ) 2 were studied by 57 Fe Mossbauer spectroscopy. A superconducting transition at 30 K was detected and coexistence of magnetism and superconductivity at low temperatures was observed. The Mossbauer spectra show two iron-atom surroundings, which are attributed to undoped A Fe 2 As 2 and substituted A Fe 2 (As 1− x P x ) 2 , with at least one phosphorus atom in the tetragonal iron environment, ( A = Ba or Eu). These two iron-atom surroundings were attributed to one macroscopic A Fe 2 (As 1− x P x ) 2 phase.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81a8b32aa9588e4124527d4988b098ff https://doi.org/10.1016/j.jmmm.2014.11.054 Zobrazit plný text záznamu Full Text from ScienceDirect