Synchrotron X-Ray Diffraction Studies on the New Generation Ferromagnetic Semiconductor Li(Zn,Mn)As under High Pressure**Supported by the National Natural Science Foundation and the Ministry of Science and Technology of China, the National Natural Science Foundation of China under Grant No U1530402, the U.S. Department of Energy of Office of Science under Grant No DE-AC02-06CH11357, the DOE-NNSA under Grant No DE-NA0001974, the

Abstract

The pressure effect on the crystalline structure of the I–II–V semiconductor Li(Zn,Mn)As ferromagnet is studied using in situ high-pressure x-ray diffraction and diamond anvil cell techniques. A phase transition starting at ∼11.6 GPa is found. The space group of the high-pressure new phase is proposed as Pmca. Fitting with the Birch–Murnaghan equation of state, the bulk modulus and its pressure derivative of the ambient pressure structure with space group of are GPa and , respectively.