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Phase separation and zero thermal expansion in antiperovskite Mn₃Zn$_{0.77}$Mn$_{0.19}$N$_{0.94}$ : An in situ neutron diffraction investigation

Deng, Sihao; Sun, Ying; Wu, Hui; Shi, Zaixing; Wang, Lei; Yan, Jun; Shi, Kewen; Hu, Pengwei; Diao, Xungang; Huang, Qingzhen; Sürgers, Christoph ORCID iD icon 1; Wang, Cong
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)

Abstract:

The antiperovskite Mn₃Zn$_{0.77}$Mn$_{0.19}$N$_{0.94}$ was investigated by in situ neutron powder diffraction (NPD) in the temperature region 5-300 K. Here, a noncollinear-antiferromagnetic/collinear-ferrimagnetic phase separation (PS) showing different lattice parameters was firstly revealed in antiperovskites. The NPD results prove that the noncollinear antiferromagnetic phase, even coexisting with the collinear ferrimagnetic phase, could be responsible for the zero thermal expansion behavior of Mn₃Zn$_{0.77}$Mn$_{0.19}$N$_{0.94}$ below 110 K. These findings suggest that Mn₃ZnN based materials could open a new avenue for further exploring the noncollinear magnetic PS and correlated physical properties of antiperovskites.


Originalveröffentlichung
DOI: 10.1016/j.scriptamat.2017.10.031
Scopus
Zitationen: 4
Web of Science
Zitationen: 2
Dimensions
Zitationen: 4
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 15.03.2018
Sprache Englisch
Identifikator ISSN: 1359-6462, 1872-8456
KITopen-ID: 1000076249
Erschienen in Scripta materialia
Verlag Elsevier
Band 146
Seiten 18-21
Vorab online veröffentlicht am 03.11.2017
Nachgewiesen in Dimensions
Web of Science
Scopus
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