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Search Publications by: Efrain Rodriguez (Assoc)

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Displaying 1 - 8 of 8

Proton and Ammonia Intercalation into Layered Iron Chalcogenides

June 25, 2018
Author(s)
Xiuquan Zhou, Brandon Wilfong, Sz-Chian Liou, Halyna Hodovanets, Craig Brown, Efrain E. Rodriguez
Structurally related to the iron-based superconductors, two new intercalated iron chalcogenides (H 0.5NH 3)Fe 2Ch 2 where Ch = S, Se have been prepared. By topochemical conversion, the protons were exchanged by lithium to form (Li 0.5NH 3)Fe 2Ch 2

Phase Diagram of the Relaxor Ferroelectric (1-x)Pb(Mg 1/3 Nb 2/3 )O 3-x PbTiO 3 Revisted: A neutron Powder Diffraction Study of the Relaxor Skin Effect

January 19, 2015
Author(s)
Daniel Phelan, Efrain E. Rodriguez, J Gao, Y Bing, Z.-G. Ye, Qingzhen Huang, Jinsheng Wen, Guangyong Xu, C. Stock, M Matsuura, Peter M. Gehring
We revisit the phase diagram of the relaxor ferroelectric PMN-xPT using neutron powder diffraction to test suggestions that residual oxygen vacancies and/or strain affect the ground state crystal structure. Powdered samples of PMN-xPT were prepared with