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https://hdl.handle.net/11147/8923
Title: | Predicted polymorph manipulation in an exotic double perovskite oxide | Authors: | Su, He-Ping Li, Shu-Fang Han, Yifeng Wu, Mei-Xia Gui, Churen Chang, Yanfen Li, Man-Rong Adem, Umut |
Publisher: | Royal Society of Chemistry | Abstract: | Predicted polymorph manipulation offers a cutting-edge route to design function-oriented materials in an exotic double perovskite-related oxide A(2)BB ' O-6 with small A-site cations. Herein, first-principles density functional theory calculations in light of the equation of state for solid, for the first time, was used to predict the Mg3TeO6 (R3)-to-perovskite (P2(1)/n) type phase transition in Mn3TeO6 at around 5 GPa, regardless of the deployment of magnetic interactions. The high-pressure synthesis and synchrotron diffraction crystal structure analysis corroborated experimentally the polymorph variation in Mn22+Mn2+Te6+O6, which was accompanied by a 13 K increase in the antiferromagnetic ordering temperature (37 K) in the high-pressure perovskite polymorph compared to that of the ambient-pressure R3 phase (24 K). The magnetodielectric coupling remains up to 50 K with the maximum being around the magnetic ordering temperature in the perovskite Mn3TeO6. Thus, the predicted polymorph manipulation here offers the possibility of discovering accelerated materials by inverse design in exotic perovskite oxides. | URI: | https://doi.org/10.1039/c9tc03367j https://hdl.handle.net/11147/8923 |
ISSN: | 2050-7526 2050-7534 |
Appears in Collections: | Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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c9tc03367j.pdf | 3.72 MB | Adobe PDF | View/Open |
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