Structure and thermal expansion of the tungsten bronze Pb2KNb5O15

Author:

Lin Kun123,Wu Hui45678,Wang Fangfang123,Rong Yangchun123,Chen Jun123,Deng Jinxia12392,Yu Ranbo123,Fang Liang10111213,Huang Qingzhen456,Xing Xianran123

Affiliation:

1. Department of Physical Chemistry

2. University of Science and Technology Beijing

3. Beijing 100083, China

4. NIST Center for Neutron Research

5. National Institute of Standards and Technology

6. Gaithersburg, USA

7. Department of Materials Science and Engineering

8. University of Maryland

9. Department of Chemistry

10. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials

11. Ministry of Education

12. Guilin University of Technology

13. Guilin 541004, China

Abstract

Negative thermal expansion and abnormal spontaneous polarization direction along b axis in tetragonal tungsten bronze Pb2KNb5O15 are presented. A Pb–O covalency, octahedrons cooperative rotation mechanism is proposed.

Publisher

Royal Society of Chemistry (RSC)

Subject

Inorganic Chemistry

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4. J. D. Strock , in Development of Zero Coefficient of Thermal Expansion composite tubes for stable space structures , 1992 , pp. 223–230

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