Zr-Modified Pb(Mg1/3Nb2/3)O3 with a Long-Range Cation Order

Zhao, Xiaohui; Tan, Xiaoli; Qu, Weiguo; Tan, Xiaoli

Zr-Modified Pb(Mg1/3Nb2/3)O3 with a Long-Range Cation Order

File

2008_Tan_ModifiedLong.pdf (921.17 KB)

Date

2008-07-01

Authors

Zhao, Xiaohui

Tan, Xiaoli

Qu, Weiguo

Tan, Xiaoli

Authors

Person

Tan, Xiaoli

Professor

Organizational Units

Organizational Unit

Materials Science and Engineering

Materials engineers create new materials and improve existing materials. Everything is limited by the materials that are used to produce it. Materials engineers understand the relationship between the properties of a material and its internal structure — from the macro level down to the atomic level. The better the materials, the better the end result — it’s as simple as that.

Department

Materials Science and Engineering

Abstract

The 1:1 structural order and B-site cation order in Pb(Mg_1/3Nb_2/3)O₃ ceramics was significantly enhanced by Zr⁴⁺ substituting Nb⁵⁺ according to the chemical formula Pb(Mg_1/3Zr_2x/3Nb_2(1−x)/3)O_3−x/3. The enhanced structural and cation order was revealed by both X-ray diffraction and transmission electron microscopy. The increased charge difference and the introduced oxygen vacancies were suggested to account for the observed long-range cation order. Typical relaxor ferroelectric behavior was retained even in the ceramics with a high degree of cation order.

Comments

This is the peer reviewed version of the following article: Journal of the American Ceramic Society 91, 3031-3038 (2008), which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/j.1551-2916.2008.02552.x/full.

Copyright

Tue Jan 01 00:00:00 UTC 2008

Collections

Publications

Full item page