Batch synthesis of rare-earth nickelates electronic phase transition perovskites via rare-earth processing intermediates

作     者：Xiao-Yu Li Zi-Ang Li Feng-Bo Yan Hao Zhang Jia-Ou Wang Xin-You Ke Yong Jiang Nuo-Fu Chen Ji-Kun Chen Xiao-Yu Li;Zi-Ang Li;Feng-Bo Yan;Hao Zhang;Jia-Ou Wang;Xin-You Ke;Yong Jiang;Nuo-Fu Chen;Ji-Kun Chen

作者机构：School of New EnergyNorth China Electric Power UniversityBeijing102206China School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of SciencesBeijing100049China Department of Mechanical and Aerospace EngineeringCase Western Reserve UniversityClevelandOH44106USA 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第10期

页      面：3495-3503页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 0702[理学-物理学] 

基　　金：financially supported by the National Key Research and Development Program of China (No. 2021YFA0718900) the National Natural Science Foundation of China (Nos.52073090 and 62074014) the Fundamental Research Funds for the Central Universities (No.FRF-TP-19-023A3Z) Beijing New-star Plan of Science and Technology (No. Z191100001119071) 

主　　题：Quantum materials Rare-earth nickelates Metastable materials Perovskite oxides 

摘      要：The rare-earth nickelates(RENiO_(3)) exhibit an exceptional complex electronic phase diagram and multiple electronic phase transitions that enrich promising applications in correlated electronic devices beyond conventional ***,the practical applications of RENiO_(3) are challenged by their intrinsic thermodynamic metastability in material synthesis and high material ***,developing an economical strategy to achieve the batch synthesis of RENiO_(3) is of vital *** this work,we enlarged the synthesis amount of RENiO_(3) up to 20 g per batch using chloride(KCI) assisted molten salt *** optimizing the reaction conditions,the powder of RENiO_(3) with the cubic shape and average size of ~2μm was effectively synthesized,while their phase purity exceeded 95%.In addition,the cost to synthesize RENiO_(3) was further reduced by using rare-earth extraction intermediate products as the raw materials,instead of using the pure rare-earth *** also achieved wide adjustments in the metal-to-insulator-transition temperature from160 to 420 K without significantly reducing the transition *** enlarging the synthesis amount and the reducing the cost,it paves the way to the device application of RENiO_(3).