journal article·2024-01Open access

Antiferroelectricity‐Induced Negative Thermal Expansion in Double Perovskite Pb2CoMoO6

Haoting Zhao, Zhao Pan, Xi Shen, Jianfa Zhao, Dabiao Lu, Jie Zhang, Zhiwei Hu, Chang‐Yang Kuo, Chien‐Te Chen, Ting‐Shan Chan, Christoph J. Sahle, Cheng Dong, Takumi Nishikubo, Takehiro Koike, Zun‐Yi Deng, Jiawang Hong, Runze Yu, Pu Yu, Masaki Azuma, Changqing Jin, Youwen Long

Small· Volume 20· Issue 2

Abstract

Abstract Materials with negative thermal expansion (NTE) attract significant research attention owing to their unique physical properties and promising applications. Although ferroelectric phase transitions leading to NTE are widely investigated, information on antiferroelectricity‐induced NTE remains limited. In this study, single‐crystal and polycrystalline Pb2CoMoO6 samples are prepared at high pressure and temperature conditions. The compound crystallizes into an antiferroelectric Pnma orthorhombic double perovskite structure at room temperature owing to the opposite displacements dominated by Pb2+ ions. With increasing temperature to 400 K, a structural phase transition to cubic Fm‐3m paraelectric phase occurs, accompanied by a sharp volume contraction of 0.41%. This is the first report of an antiferroelectric‐to‐paraelectric transition‐induced NTE in Pb2CoMoO6. Moreover, the compound also exhibits remarkable NTE with an average volumetric coefficient of thermal expansion αV = −1.33 × 10−5 K−1 in a wide temperature range of 30–420 K. The as‐prepared Pb2CoMoO6 thus serves as a prototype material system for studying antiferroelectricity‐induced NTE.
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Research context

OpenAlex topics: Thermal Expansion and Ionic Conductivity · Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

College of Materials Science and Opto‐Electronic Technology University of Chinese Academy of Sciences Beijing 100049 China

School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China

Max Planck Institute for Chemical Physics of Solids 01187 Dresden Germany

Department of Electrophysics National Yang Ming Chiao Tung University Hsinchu 30010 Taiwan

National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan

European Synchrotron Radiation Facility (ESRF) 71 Avenue des Martyrs Grenoble 38000 France

School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 China

Kanagawa Institute of Industrial Science and Technology Ebina 243–0435 Japan

Laboratory for Materials and Structures Institute of Innovative Research Tokyo Institute of Technology Yokohama 226–8503 Japan

School of Aerospace Engineering Beijing Institute of Technology Beijing 100081 China

Center for High‐Pressure Science and Technology Advanced Research Beijing 100094 China

State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 China

Living Systems Materialogy (LiSM) Research Group International Research Frontiers Initiative (IRFI) Tokyo Institute of Technology 4259, Nagatsuta‐cho, Midori‐ku Yokohama 226–8501 Japan

Songshan Lake Materials Laboratory Dongguan 523808 China

Funding

National Key Research and Development Program of China · Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China · Chinese Academy of Sciences

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