First-principles calculations of electrical properties, structure, and phase transition of K1−xNaxNbO3 solid solutions

文献情報

出版日 2017-09-11

DOI 10.1039/C7CP05728H

インパクトファクター 3.676

著者

Dong Yang, Qizhen Chai, Lingling Wei, Xiaolian Chao, Zupei Yang

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要旨

The structure, total energy and orthorhombic as well as tetragonal electronic properties of K1−xNaxNbO3 (KNN) as a function of Na concentration were studied with first principles calculations. When the Na content of KNN was gradually increased the orthogonal phase transformation occurred, which produced an enhanced piezoelectric response of the tetragonal KNN. This result proved that the high d33 originated from the phase transition. The corresponding calculations reveal that the change of Nb–O bond length is the origin of distortion of Nb–O octahedral and phase transition. In addition, the calculations observed an unusual high peak of the KNN piezoelectric parameter, which showed the same trend as the experimental results.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

First-principles calculations of electrical properties, structure, and phase transition of K1−xNaxNbO3 solid solutions

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