Black phosphorus was studied under high pressure conditions generated by a diamond anvil cell and usinf He as pressure transmitting medium across the A17, A7 and simple-cubic phases up to 30 GPa. Synchrotron X-ray diffraction showed the persistence of two previously unreported peaks related to the A7 structure in the pressure range of the simple-cubic phase. The Rietveld refinement of the data demonstrates the occurrence of a two-step mechanism for the A7 to simple-cubic phase transition, indicating the existence of an intermediate pseudo simple-cubic structure. From a chemical point of view this study represents a deep insight on the mechanism of interlayer bond formation during the transformation from the layered A7 to the non-layered simple-cubic phase of phosphorus. As superconductivity is concerned, a new experimental evidence to explain the anomalous pressure behavior of Tc in phosphorus below 30 GPa is provided

Interlayer Bond Formation in Black Phosphorus at High Pressure / Scelta, Demetrio; Baldassarre, Adhara; Serrano-Ruiz, Manuel; Dziubek, Kamil; Cairns, Andrew B.; Peruzzini, Maurizio; Bini, Roberto; Ceppatelli, Matteo. - In: ANGEWANDTE CHEMIE. INTERNATIONAL EDITION. - ISSN 1433-7851. - STAMPA. - 56:(2017), pp. 14135-14140. [10.1002/anie.201708368]

Interlayer Bond Formation in Black Phosphorus at High Pressure

Scelta, Demetrio;Peruzzini, Maurizio;Bini, Roberto;Ceppatelli, Matteo
2017

Abstract

Black phosphorus was studied under high pressure conditions generated by a diamond anvil cell and usinf He as pressure transmitting medium across the A17, A7 and simple-cubic phases up to 30 GPa. Synchrotron X-ray diffraction showed the persistence of two previously unreported peaks related to the A7 structure in the pressure range of the simple-cubic phase. The Rietveld refinement of the data demonstrates the occurrence of a two-step mechanism for the A7 to simple-cubic phase transition, indicating the existence of an intermediate pseudo simple-cubic structure. From a chemical point of view this study represents a deep insight on the mechanism of interlayer bond formation during the transformation from the layered A7 to the non-layered simple-cubic phase of phosphorus. As superconductivity is concerned, a new experimental evidence to explain the anomalous pressure behavior of Tc in phosphorus below 30 GPa is provided
2017
56
14135
14140
Scelta, Demetrio; Baldassarre, Adhara; Serrano-Ruiz, Manuel; Dziubek, Kamil; Cairns, Andrew B.; Peruzzini, Maurizio; Bini, Roberto; Ceppatelli, Matteo
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1109488
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