4.6 Article

Structure and domain wall dynamics in lead-free KNN-based ceramics

Journal

JOURNAL OF APPLIED PHYSICS
Volume 126, Issue 12, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.5119738

Keywords

-

Funding

  1. National Science Foundation of China (NSFC) [51722208]
  2. Key Technologies Research and Development Program of Sichuan Province [2018JY0007]
  3. Fundamental Research Funds for the Central Universities [0082204151175]

Ask authors/readers for more resources

This paper comprehensively studied the effect of BaHfO3 doping on crystal structure, domain structure, and electrical properties of potassium sodium niobate ceramics, and especially analyzed the intrinsic structural characteristics of the R-O phase boundary, which can be successfully constructed through composition modification. Rietveld refinement and the piezoresponse force microscopy technique were combined to analyze the crystal structure and domain configuration of the material system. Comparative studies indicate that multiple phase coexistence will disturb the zigzag domains of the pure O phase into complex irregular domains, which are easier to switch under an external electric field, thus leading to improved electrical properties. Furthermore, the stabilized polarization state can be maintained under the thermal excitation due to the dominated O phase at high temperatures, which is beneficial for the temperature stability improvement. We believe that the structural analysis can give us a deeper understanding of the relationship among structural symmetry, domain dynamics, and electrical properties of potassium sodium niobate (KNN)-based ceramics.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available