Crystalline Structure, Defect Chemistry and Room Temperature Colossal Permittivity of Nd-doped Barium Titanate

被引：142

作者：

Sun, Qiaomei ^{[1
,2
]}

Gu, Qilin ^{[1
,2
]}

Zhu, Kongjun ^{[1
]}

Jin, Rongying ^{[3
]}

Liu, Jinsong ^{[2
]}

Wang, Jing ^{[1
]}

Qiu, Jinhao ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

DIELECTRIC-PROPERTIES; BATIO3; NANOCRYSTALS; OPTICAL-PROPERTIES; SIZE; MICROSTRUCTURE; NANOPARTICLES; EFFICIENT;

D O I：

10.1038/srep42274

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Dielectric materials with high permittivity are strongly demanded for various technological applications. While polarization inherently exists in ferroelectric barium titanate (BaTiO3), its high permittivity can only be achieved by chemical and/or structural modification. Here, we report the room-temperature colossal permittivity (similar to 760,000) obtained in xNd: BaTiO3 (x = 0.5 mol%) ceramics derived from the counterpart nanoparticles followed by conventional pressureless sintering process. Through the systematic analysis of chemical composition, crystalline structure and defect chemistry, the substitution mechanism involving the occupation of Nd3+ in Ba2+ -site associated with the generation of Ba vacancies and oxygen vacancies for charge compensation has been firstly demonstrated. The present study serves as a precedent and fundamental step toward further improvement of the permittivity of BaTiO3-based ceramics.

引用

页数：8

共 56 条

[1] Anomalous Curie temperature behavior of A-site Gd-doped BaTiO3 ceramics: The influence of strain [J].

Ben, Liubin ;

Sinclair, Derek C. .

APPLIED PHYSICS LETTERS, 2011, 98 (09)

[2] On the lateral crystal growth of laser irradiated NiTi thin films [J].

Birnbaum, A. J. ;

Yao, Y. Lawrence ;

Chung, U. -J. ;

Im, James. S. ;

Huang, X. ;

Ramirez, A. G. .

APPLIED PHYSICS LETTERS, 2009, 94 (26)

[3] SOLID-STATE AND SURFACE SPECTROSCOPIC CHARACTERIZATION OF BATIO3 FINE POWDERS [J].

BUSCA, G ;

BUSCAGLIA, V ;

LEONI, M ;

NANNI, P .

CHEMISTRY OF MATERIALS, 1994, 6 (07) :955-961

[4] Synthesis of BaTiO3 core-shell particles and fabrication of dielectric ceramics with local graded structure [J].

Buscaglia, Maria Teresa ;

Viviani, Massimo ;

Zhao, Zhe ;

Buscaglia, Vincenzo ;

Nanni, Paolo .

CHEMISTRY OF MATERIALS, 2006, 18 (17) :4002-4010

[5] Colossal dielectric constant of NaNbO3 doped BaTiO3 ceramics [J].

Cao, Wan Q. ;

Xu, Ling F. ;

Ismail, Mukhlis M. ;

Huang, Li L. .

MATERIALS SCIENCE-POLAND, 2016, 34 (02) :322-329

[6] A-Site Strain and Displacement in Ba1-xCaxTiO3 and Ba1-xSrxTiO3 and the Consequences for the Curie Temperature [J].

Dawson, James A. ;

Sinclair, Derek C. ;

Harding, John H. ;

Freeman, Colin L. .

CHEMISTRY OF MATERIALS, 2014, 26 (21) :6104-6112

[7] A resource efficient design strategy to optimise the temperature coefficient of capacitance of BaTiO3-based ceramics using finite element modelling [J].

Dean, J. S. ;

Foeller, P. Y. ;

Reaney, I. M. ;

Sinclair, D. C. .

JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (18) :6896-6901

[8] Electron paramagnetic resonance investigations of lanthanide-doped barium titanate: Dopant site occupancy [J].

Dunbar, TD ;

Warren, WL ;

Tuttle, BA ;

Randall, CA ;

Tsur, Y .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (03) :908-917

[9] X-ray photoelectron spectroscopy of amorphous and quasiamorphous phases of BaTiO3 and SrTiO3 [J].

Ehre, David ;

Cohen, Hagai ;

Lyahovitskaya, Vera ;

Lubomirsky, Igor .

PHYSICAL REVIEW B, 2008, 77 (18)

[10] Ferroelectric, electrical, and structural properties of Dy and Sc co-doped BaTiO3 [J].

Ferrarelli, Matthew C. ;

Tan, Chaou C. ;

Sinclair, Derek C. .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (17) :6292-6299

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