Isostructural phase transition-induced bulk modulus multiplication in dopant-stabilized ZrO2 solid solution
Isostructural phase transition-induced bulk modulus multiplication in dopant-stabilized ZrO2 solid solution
复制标题
掺杂稳定的 ZrO2 固溶体中同结构相变引起的体积模量倍增
DOI：
10.1088/1674-1056/28/7/076109
复制
发表时间：
2019-07
影响因子：
1.7
通讯作者：
Han Yong-Hao
中科院分区：
文献类型：
--
作者：
Wang Min;Shen Wen-Shu;Li Xiao-Dong;Li Yan-Chun;Zhang Guo-Zhao;Liu Cai-Long;Zhao Lin;Lv Shu-Peng;Gao Chun-Xiao;Han Yong-Hao
利用原位交流阻抗谱和X射线衍射（XRD）技术研究了Y_2O_3/ZrO_2固溶体在23.2GPa高压下的电输运性质和结构。在阻抗谱中可以发现Y2 O3/ZrO 2的压阻在13.3 GPa前后呈现出两种不同的变化趋势，但XRD测量和Rietveld精修揭示的晶体对称性仍然保持稳定的立方结构。晶格常数和晶胞体积的压力依赖性表明，Y2 O3/ZrO 2固溶体在13.1 GPa下发生了同构相变，这是导致电阻异常变化的原因。用Birch-Murnaghan状态方程对体积数据进行拟合，发现由于压力诱导的等结构相变，Y2 O3/ZrO 2固溶体的体积模量B 0从125.2 GPa增加到290.3 GPa，增加了131.9%。
The electrical transport properties and structures of Y2O3/ZrO2 solid solution have been studied under high pressure up to 23.2 GPa by means of in situ impedance spectroscopy and x-ray diffraction (XRD) measurements. In the impedance spectra, it can be found that the pressure-dependent resistance of Y2O3/ZrO2 presents two different change trends before and after 13.3 GPa, but the crystal symmetry still remains stable in the cubic structure revealed by the XRD measurement and Rietveld refinement. The pressure dependence of the lattice constant and unit cell volume shows that the Y2O3/ZrO2 solid solution undergoes an isostructural phase transition at 13.1 GPa, which is responsible for the abnormal change in resistance. By fitting the volume data with the Birch–Murnaghan equation of state, we found that the bulk modulus B0 of the Y2O3/ZrO2 solid solution increases by 131.9% from 125.2 GPa to 290.3 GPa due to the pressure-induced isostructural phase transition.
登录
查看更多内容
影响因子：
4
作者：
Qinglin Wang;Cailong Liu;Yang Gao;Yanzhang Ma;Yonghao Han;Chunxiao Gao
通讯作者：
Chunxiao Gao
影响因子：
4
作者：
Hao Aimin;Li Ming;Li Yanchun;Li Hui;Zou Guangtian;Ma Yanzhang;Huang Xiaowei;Yu Cuiling;He Chunyuan;Li Xiaodong;Zhang Dongmei;Liu Bingguo;Liu Jing;Gao Chunxiao
通讯作者：
Gao Chunxiao
DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
通讯作者：
--
影响因子：
3.5
作者：
Jun Yang;Feng Zhu;Q. Zhang;Ye Wu;Xiang Wu;S. Qin;Juncai Dong;Dongliang Chen
通讯作者：
Jun Yang;Feng Zhu;Q. Zhang;Ye Wu;Xiang Wu;S. Qin;Juncai Dong;Dongliang Chen
影响因子：
4
作者：
D. Dolan;T. Ao
通讯作者：
D. Dolan;T. Ao