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Absence of a polar phase in perovskite chromite $$R$$CrO$$_{3}$$ ($$R$$=La and Pr)

Yoshii, Kenji  ; Ikeda, Naoshi*; Shimojo, Yutaka; Ishii, Yoshinobu*

Magnetic and dielectric properties have been studied for LaCrO$$_{3}$$, PrCrO$$_{3}$$, and their solid solution La$$_{0.5}$$Pr$$_{0.5}$$CrO$$_{3}$$, belonging to a family of ferroelectricorthochromite series $${it R}$$CrO$$_{3}$$ ($${it R}$$: rare earths). The magnetic measurements confirm that the material shows canted antiferromagnetic ordering at 240-288 K. Neutron diffraction patterns could be fitted with the centrosymmetric $${it Pnma}$$, which is different from the non-centrosymmetric structure proposed for the ferroelectric phase of NdCrO$$_{3}$$. The large dielectric constants are likely due to the hopping of charge carriers as proposed previously for other chromites.

Language

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English

Journal

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Materials Chemistry and Physics

Volume

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190

Number

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Pages

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p.96 - 101

Publication Year/Month

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2017/04

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1016/j.matchemphys.2016.12.074

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:48.52

Category:Materials Science, Multidisciplinary

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