• QINGNING LI

      Articles written in Bulletin of Materials Science

    • Effect of domains configuration on crystal structure in ferroelectric ceramics as revealed by XRD and dielectric spectrum

      JIWEN XU WEIDONG ZENG QINGNING LI LING YANG CHANGRONG ZHOU

      More Details Abstract Fulltext PDF

      It is well known that domains and crystal structure control the physical properties of ferroelectrics. The ex-situelectric field-dependent structural study, carried out in unpoled/poled crushed powder and bulk samples for (Li$_{0.5}$Nd$_{0.5}$)$^{2+}$ modified 0.95Bi$_{0.5}$Na$_{0.5}$TiO$_3$−0.05BaTiO$_3$ solid solution, established a correlation between domain configuration andcrystal structure variation. Under applying electric field, the smeared ferroelectric phase structure due to coherence diffractioneffect of nanodomains reappeared due to obsolescent coherence effect associated with the field-induced ordered nanodomains.The macroscopic characterizing techniques of domain configuration such as dielectric constant spectroscopy and X-raydiffraction measurement can provide a basis for understanding the correlation between domains configuration and crystalstructure in ferroelectric ceramics.

© 2017-2019 Indian Academy of Sciences, Bengaluru.