Anomalous behavior and phase transformation of <i>α</i>-GaOOH nanocrystals under static compression<xref rid="cpb_26_10_106402_fn1" ref-type="fn">*</xref> <fn id="cpb_26_10_106402_fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 50772043, 51172087, and 11074089) and the National Basic Research Program of China (Grant No. 2011CB808200)</p> </fn>

Anomalous behavior and phase transformation of α-GaOOH nanocrystals under static compression* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 50772043, 51172087, and 11074089) and the National Basic Research Program of China (Grant No. 2011CB808200)

Zhang Zhao¹, Cui Hang¹, Yang Da-Peng^{2, †}, Zhang Jian^{1, ‡}, Tang Shun-Xi¹, Wu Si¹, Cui Qi-Liang¹

(color online) Schematic illustrations of the crystal structure of diaspore-type α-GaOOH for (a) an arbitrary view and (b) a projection view along the c axis, and (c) distorted GaO₃(OH)₃ octahedron. There are two independent oxygen sites: O2 in ambient conditions covalently bonded to hydrogen (O–H bond), and O1 characterized by a weak H⋯O bond; in the selected octahedron one can distinguish between O1a and O2a atoms at the axial positions and two O1e and two O2e atoms at the equatorial positions.