Journal Article

PUBDB-2021-00334

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Anomalous High Temperature Structural Behavior of Potential Multifunctional Material SmCo$_{0.5}$Cr$_{0.5}$O$_3$

Hreb, V. ; Shved, V. ; Buryy, O.Extern* ; Pekinchak, O. ; Vasylechko, L. (Corresponding author)Extern*

2020
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/zaac.202000044

Abstract: Crystal structure parameters of the mixed cobaltite–chromite SmCo$_{0.5}$Cr$_{0.5}$O$_3$ in the temperature range of 298–1173 K were derived from in situ high‐resolution X‐ray synchrotron powder diffraction data. Similar to the parent SmCoO$_3$ compound, SmCo$_{0.5}$Cr$_{0.5}$O$_3$ reveals anomalous thermal expansion reflected in abnormal temperature dependence of the unit cell dimensions and the selected interatomic distances and angles. These anomalies are associated with temperature induced changes of spin state of Co$^{3+}$ ions and coupled insulator‐metal transition. Observed decreasing behavior of the bandwidth W points on the increasing population of the exited spin states of Co$^{3+}$ ions in SmCo$_{0.5}$Cr$_{0.5}$O$_3$ with increasing temperature. First principle calculations revealed antiferromagnetic ground state of SmCo$_{0.5}$Cr$_{0.5}$O$_3$ as the most stable.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. DORIS Beamline B2 (DORIS III)

Appears in the scientific report 2020

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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