title: Five-dimensional visualization of phase transition in BiNiO3under high pressure.
abstract: Colossal negative thermal expansion was recently discovered in BiNiO3associated with a low density to high density phase transition under high pressure. The varying proportion of co-existing phases plays a key role in the macroscopic behavior of this material. Here, we utilize a recently developed X-ray Absorption Near Edge Spectroscopy Tomography method and resolve the mixture of high/low pressure phases as a function of pressure at tens of nanometer resolution taking advantage of the charge transfer during the transition. This five-dimensional (X, Y, Z, energy, and pressure) visualization of the phase boundary provides a high resolution method to study the interface dynamics of high/low pressure phase.
authors.affiliation: Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Yijin
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Center of High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, People's Republic of China ; High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, 9700 S Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Junyue
authors.initials: J
authors.lastname: Wang
authors.affiliation: Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama 226-8503, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Azuma
authors.affiliation: Geological and Environmental Sciences, 450 Serra Mall, Stanford University, Stanford, California 94305, USA ; SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences, 2575 Sand Hill Road, Menlo Park, California 94025, USA ; Photon Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Wendy L
authors.initials: WL
authors.lastname: Mao
authors.affiliation: Center of High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, People's Republic of China ; High Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, 9700 S Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Wenge
authors.initials: W
authors.lastname: Yang
references.citation: Chem Mater. 2013 May 14;25(9):1664-1672
references.pmid: 23745016
references.citation: Microsc Res Tech. 2008 Sep;71(9):639-43
references.pmid: 18454474
references.citation: Chem Commun (Camb). 2013 May 21;49(41):4622-4
references.pmid: 23586073
references.citation: Opt Express. 2011 Jan 17;19(2):540-5
references.pmid: 21263593
references.citation: Microsc Res Tech. 2013 Nov;76(11):1112-7
references.pmid: 23922210
references.citation: Chem Commun (Camb). 2013 Jul 25;49(58):6480-2
references.pmid: 23685635
references.citation: Nat Commun. 2011 Jun 14;2:347
references.pmid: 21673668
references.citation: Microsc Microanal. 2010 Jun;16(3):327-36
references.pmid: 20374681
references.citation: Angew Chem Int Ed Engl. 2012 Nov 26;51(48):11986-90
references.pmid: 23090844
references.citation: J Synchrotron Radiat. 2011 Sep;18(Pt 5):773-81
references.pmid: 21862859
references.citation: J Synchrotron Radiat. 2012 Mar;19(Pt 2):281-7
references.pmid: 22338691
references.citation: IEEE Trans Pattern Anal Mach Intell. 1986 Jun;8(6):679-98
references.pmid: 21869365
references.citation: Anal Bioanal Chem. 2012 Sep;404(5):1297-301
references.pmid: 22349401