The high-pressure compressibility of B12P2. (March 2017)

• Record Type: Journal Article
• Authors: Gao, Yang; Zhou, Mi; Wang, Haiyan; Ji, Cheng; Whiteley, C.E.; Edgar, J.H.; Liu, Haozhe; Ma, Yanzhang
• Is Part Of: Journal of physics and chemistry of solids. Volume 102(2017)
• Page Start: 21
• Page End: 26
• Publication Date: 2017-03
• Subjects: Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2016.11.002
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: In situ high pressure synchrotron X-ray diffraction measurements were performed on icosahedral boron phosphide (B12 P2 ) to 43.2 GPa. No structural phase transition occurs over this pressure range. The bulk modulus of B12 P2 is K O T = 207 ± 7 G P a with pressure derivative of K ' O T = 6.6 ± 0.8 . The structure is most compressible along the chain formed by phosphorus and boron atoms in the crystal structure. It is believed that the compressibility of boron-rich compounds at close to ambient pressure is determined by the boron icosahedral structure, while the inclusive atoms (both boron and non-boron) between the icosahedra determine the high-pressure compressibility and structure stability.