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- Title
The structure and physical properties of MnWO<sub>4</sub> ceramics replaced by Li<sup>+</sup> ions.
- Authors
Dai, Haiyang; Shen, Qinlong; Zhang, Jinling; Shang, Cui; Li, Tao; Chen, Zhenping
- Abstract
The impacts of Li+ replacement for Mn2+ on the structure, vacancy defects, and magnetic and dielectric characteristics of Mn1-xLixWO4 (x = 0.00–0.20) ceramics synthesized by solid-state reaction were investigated. The analysis of XRD and Raman results revealed that Mn1-xLixWO4 samples had single-phase monoclinic structure, and Li+ ions had partially replaced Mn2+ ions and induced lattice deformation and substitutional disorder in Mn1-xLixWO4. Positron annihilation lifetime spectroscopy indicated that Li+ replacement resulted in the reduction of vacancy size and the increase of vacancy concentration. The dielectric properties measurements showed that Li+ replacement significantly enhanced the dielectric constant of the Mn1-xLixWO4 samples. It could be observed from the magnetic properties measurements that Li+ replacement suppressed the AF1 phase, extended the existing temperature range of AF2 phase, and weaken the magnetization of Mn1-xLixWO4 system. The evolution of magnetic properties was related to vacancy defects, lattice distortion, chemical disorder, and magnetic dilution effect caused by Li+ replacement.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 31, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11491-7