Raman spectroscopic study of liebenbergite and Ni2SiO4 spinel at high pressure and high temperature: nickel effects on the vibration properties of olivine and spinel structures - Shuchang Gao; Jinpu Liu; Hang Cheng; Li Zhang; Yanhao Lin; Xiaoguang Li; Xueqing Qin (Physics and Chemistry of Minerals, 2024)