000014216 001__ 14216
000014216 005__ 20250129094400.0
000014216 0247_ $$2DOI$$a10.1103/PhysRevB.83.054503
000014216 0247_ $$2WOS$$aWOS:000287129700008
000014216 0247_ $$2MLZ$$aPhysRevB.83.054503
000014216 0247_ $$2Handle$$a2128/10947
000014216 037__ $$aPreJuSER-14216
000014216 041__ $$aeng
000014216 082__ $$a530
000014216 084__ $$2WoS$$aPhysics, Condensed Matter
000014216 1001_ $$0P:(DE-HGF)0$$aMittal, R.$$b0
000014216 245__ $$aAmbient- and low-temperature synchrotron x-ray diffraction study of BaFe2As2 and CaFe2As2 at high pressures up to 56 GPa
000014216 260__ $$aCollege Park, Md.$$bAPS$$c2011
000014216 300__ $$a054503
000014216 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
000014216 3367_ $$2DataCite$$aOutput Types/Journal article
000014216 3367_ $$00$$2EndNote$$aJournal Article
000014216 3367_ $$2BibTeX$$aARTICLE
000014216 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000014216 3367_ $$2DRIVER$$aarticle
000014216 440_0 $$04919$$aPhysical Review B$$v83$$x1098-0121$$y5
000014216 500__ $$aR.M. and S.K.M. thank the Department of Science and Technology (DST), India for providing financial support to carry out synchrotron x-ray diffraction at European Synchrotron Radiation Facility, Grenoble, France. We thank M. Hanfland and W. Crichton for loading the helium into the cells for our measurements carried out at ESRF.
000014216 520__ $$aWe report on high-pressure powder synchrotron x-ray diffraction studies on MFe2As2 (M = Ba, Ca) over a range of temperatures and pressures up to about 56 GPa using a membrane diamond-anvil cell. Our data indicate a phase transition to a collapsed tetragonal phase in both compounds upon compression. The data at 300 K are measured in both pressure-increasing and -decreasing cycles. Our measurements show that at 300 K in the Ba compound, the transition occurs at 27 GPa, which is much higher than the transition pressure of 1.7 GPa in the Ca compound. At low temperature, we could obtain data only in the pressure-increasing cycle, therefore a precise transition pressure is not identified. At a low temperature of 33 K, the transition to the tetragonal phase in the Ba compound starts, upon compression, at about 29 GPa, which is much higher than the transition pressure of 0.3 GPa at 40 K as known in the case of the Ca compound. The much higher transition pressure in the Ba compound may be due to its larger unit-cell volume at ambient pressure. It is important to note that the transition in both compounds occurs when they are compressed to almost the same value of the unit-cell volume and attain similar c(t)/a(t) ratios. We also show that the FeAs4 tetrahedra are much less compressible and more distorted in the collapsed tetragonal phase than their nearly regular shape in the ambient pressure phase. We present a detailed analysis of the pressure dependence of the structures as well as equations of state in these important BaFe2As2 and CaFe2As2 compounds.
000014216 536__ $$0G:(DE-Juel1)FUEK415$$2G:(DE-HGF)$$aGroßgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI)$$cP55$$x0
000014216 536__ $$0G:(DE-Juel1)FUEK412$$aGrundlagen für zukünftige Informationstechnologien$$cP42$$x1
000014216 542__ $$2Crossref$$i2011-02-09$$uhttp://link.aps.org/licenses/aps-default-license
000014216 588__ $$aDataset connected to Web of Science
000014216 650_7 $$2WoSType$$aJ
000014216 7001_ $$0P:(DE-HGF)0$$aMishra, S. K.$$b1
000014216 7001_ $$0P:(DE-HGF)0$$aChaplot, S. L.$$b2
000014216 7001_ $$0P:(DE-HGF)0$$aOvsyannikov, S. V.$$b3
000014216 7001_ $$0P:(DE-HGF)0$$aGreenberg, E.$$b4
000014216 7001_ $$0P:(DE-HGF)0$$aTrots, D. M.$$b5
000014216 7001_ $$0P:(DE-HGF)0$$aDubrovinsky, L.$$b6
000014216 7001_ $$0P:(DE-Juel1)130991$$aSu, Y.$$b7$$uFZJ
000014216 7001_ $$0P:(DE-Juel1)130572$$aBrückel, T.$$b8$$uFZJ
000014216 7001_ $$0P:(DE-HGF)0$$aMatsuishi, S.$$b9
000014216 7001_ $$0P:(DE-HGF)0$$aHosono, H.$$b10
000014216 7001_ $$0P:(DE-HGF)0$$aGarbarino, G.$$b11
000014216 77318 $$2Crossref$$3journal-article$$a10.1103/physrevb.83.054503$$bAmerican Physical Society (APS)$$d2011-02-09$$n5$$p054503$$tPhysical Review B$$v83$$x1098-0121$$y2011
000014216 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.83.054503$$gVol. 83, p. 054503$$n5$$p054503$$q83<054503$$tPhysical review / B$$v83$$x1098-0121$$y2011
000014216 8567_ $$uhttp://dx.doi.org/10.1103/PhysRevB.83.054503
000014216 8564_ $$uhttps://juser.fz-juelich.de/record/14216/files/PhysRevB.83.054503.pdf$$yOpenAccess
000014216 8564_ $$uhttps://juser.fz-juelich.de/record/14216/files/PhysRevB.83.054503.gif?subformat=icon$$xicon$$yOpenAccess
000014216 8564_ $$uhttps://juser.fz-juelich.de/record/14216/files/PhysRevB.83.054503.jpg?subformat=icon-180$$xicon-180$$yOpenAccess
000014216 8564_ $$uhttps://juser.fz-juelich.de/record/14216/files/PhysRevB.83.054503.jpg?subformat=icon-700$$xicon-700$$yOpenAccess
000014216 8564_ $$uhttps://juser.fz-juelich.de/record/14216/files/PhysRevB.83.054503.pdf?subformat=pdfa$$xpdfa$$yOpenAccess
000014216 909CO $$ooai:juser.fz-juelich.de:14216$$pdnbdelivery$$pVDB$$pdriver$$popen_access$$popenaire
000014216 9141_ $$y2011
000014216 915__ $$0LIC:(DE-HGF)APS-112012$$2HGFVOC$$aAmerican Physical Society Transfer of Copyright Agreement
000014216 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000014216 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000014216 9131_ $$0G:(DE-Juel1)FUEK415$$bStruktur der Materie$$kP55$$lGroßgeräteforschung mit Photonen, Neutronen und Ionen$$vGroßgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI)$$x0
000014216 9131_ $$0G:(DE-Juel1)FUEK412$$bSchlüsseltechnologien$$kP42$$lGrundlagen für zukünftige Informationstechnologien (FIT)$$vGrundlagen für zukünftige Informationstechnologien$$x1
000014216 9132_ $$0G:(DE-HGF)POF3-623$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$aDE-HGF$$bForschungsbereich Materie$$lIn-house research on the structure, dynamics and function of matter$$vNeutrons for Research on Condensed Matter$$x0
000014216 9201_ $$0I:(DE-Juel1)PGI-4-20110106$$gPGI$$kPGI-4$$lStreumethoden$$x0
000014216 9201_ $$0I:(DE-Juel1)JCNS-1-20110106$$gJCNS$$kJCNS-1$$lNeutronenstreuung$$x1
000014216 9201_ $$0I:(DE-Juel1)JCNS-20121112$$kJülich Centre for Neutron Science JCNS (JCNS) ; JCNS$$lJCNS$$x2
000014216 9201_ $$0I:(DE-82)080009_20140620$$gJARA$$kJARA-FIT$$lJülich-Aachen Research Alliance - Fundamentals of Future Information Technology$$x3
000014216 9201_ $$0I:(DE-Juel1)JCNS-2-20110106$$gJCNS$$kJCNS-2$$lStreumethoden$$x4
000014216 970__ $$aVDB:(DE-Juel1)126235
000014216 9801_ $$aFullTexts
000014216 980__ $$aVDB
000014216 980__ $$aConvertedRecord
000014216 980__ $$ajournal
000014216 980__ $$aI:(DE-Juel1)PGI-4-20110106
000014216 980__ $$aI:(DE-Juel1)JCNS-1-20110106
000014216 980__ $$aI:(DE-Juel1)JCNS-1-20110106
000014216 980__ $$aI:(DE-82)080009_20140620
000014216 980__ $$aI:(DE-Juel1)JCNS-2-20110106
000014216 980__ $$aUNRESTRICTED
000014216 980__ $$aI:(DE-Juel1)JCNS-2-20110106
000014216 980__ $$aI:(DE-Juel1)JCNS-SNS-20110128
000014216 980__ $$aI:(DE-Juel1)JCNS-ILL-20110128
000014216 981__ $$aI:(DE-Juel1)JCNS-2-20110106
000014216 981__ $$aI:(DE-Juel1)JCNS-2-20110106
000014216 981__ $$aI:(DE-Juel1)JCNS-2-20110106
000014216 981__ $$aI:(DE-Juel1)JCNS-SNS-20110128
000014216 981__ $$aI:(DE-Juel1)JCNS-ILL-20110128
000014216 981__ $$aI:(DE-Juel1)VDB881
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1021/ja800073m
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.101.107006
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0953-8984/21/1/012208
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.79.020511
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.79.064504
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.79.060504
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.100506
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.104514
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.224518
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.102.217001
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.81.144502
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.184517
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.79.024513
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1038/nmat2443
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1016/j.ssc.2009.05.026
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0953-8984/22/29/292202
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0953-8984/22/16/164208
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.100507
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1209/0295-5075/86/27001
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.102.037003
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.81.224511
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0953-8984/22/5/052201
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.81.214407
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.81.094523
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/1367-2630/11/2/025023
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.80.094530
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1016/j.ssc.2009.09.030
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.101.117004
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.102.107005
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.101.057006
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.80.014521
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.020503
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0953-8984/20/32/322204
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.81.180506
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1038/nature06972
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.78.012505
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.80.064506
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1063/1.3265992
000014216 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1016/0921-4534(92)90743-V