Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990917 | Journal of Alloys and Compounds | 2018 | 23 Pages |
Abstract
Herein we proposed an approach to quantitatively evaluate the individual contribution of orthorhombic and tetragonal phase in the polymorphic phase transition (PPT) region of Li modified (K,Na)NbO3 during the poling process. Through investigating the feature of domain switching in orthorhombic and tetragonal phase, it found that the essence for the switching of polarization vectors ã110ã in orthorhombic phase and ã001ã in tetragonal phase was tiny ion displacement. With the increase of Li content the volume ratio of tetragonal phase in the coexistence phase at room temperature went up as well as the value of ion displacement and X-ray diffraction results could clearly elaborate the validity of the above statement.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yongjie Zhao, Jialin Liu, Xiaowen Zhang, Heping Zhou,