000291398 001__ 291398 000291398 005__ 20250730113653.0 000291398 0247_ $$2doi$$a10.1103/PhysRevB.92.014117 000291398 0247_ $$2ISSN$$a0163-1829 000291398 0247_ $$2ISSN$$a0556-2805 000291398 0247_ $$2ISSN$$a1095-3795 000291398 0247_ $$2ISSN$$a1098-0121 000291398 0247_ $$2ISSN$$a1550-235X 000291398 0247_ $$2WOS$$aWOS:000358841400001 000291398 0247_ $$2openalex$$aopenalex:W2563800874 000291398 037__ $$aPUBDB-2015-05370 000291398 041__ $$aEnglish 000291398 082__ $$a530 000291398 1001_ $$0P:(DE-H253)PIP1007910$$aFriedrich, Alexandra$$b0$$eCorresponding author 000291398 245__ $$aPressure-induced spin collapse of octahedrally coordinated $\mathrm{Mn^{3+}}$ in the tetragonal hydrogarnet henritermierite $\mathrm{Ca_{3}Mn_{2}[SiO_{4}]_{2}[O_{4}H_{4}]}$ 000291398 260__ $$aCollege Park, Md.$$bAPS$$c2015 000291398 3367_ $$2DRIVER$$aarticle 000291398 3367_ $$2DataCite$$aOutput Types/Journal article 000291398 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1519648774_12626 000291398 3367_ $$2BibTeX$$aARTICLE 000291398 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000291398 3367_ $$00$$2EndNote$$aJournal Article 000291398 520__ $$aThe high-pressure behavior of natural henritermierite garnet with close to end-member composition Ca$_{3}$Mn$_{2}$[SiO$_{4}$]$_{2}$[O$_{4}$H$_{4}$] was studied at pressures up to 80 GPa using single-crystal synchrotron x-ray diffraction, Raman spectroscopy, and quantum-mechanical calculations based on density functional theory. An isosymmetric phase transition was observed in the pressure range between 55 and 70 GPa, which is associated with a gradual high-spin to low-spin electronic transition in Mn$^{3+}$ and a pronounced reduction of the Jahn-Teller distortion of the Mn$^{3+}$O$_{4}$(OH)$_{2}$ octahedra. In the high-pressure phase the Jahn-Teller distortion is totally suppressed and the Mn$^{3+}$ is in a low-spin configuration. Experimental structural data before and after the phase transition are in excellent agreement with the theoretically predicted structural compression of the high-spin and low-spin phases, respectively. While the overall unit-cell volume is reduced by about 1.5% across the phase transition, a collapse of about 4–5% of the MnO6 octahedral volume is observed. The high-spin phase shows a bulk modulus B = 101(1) GPa and its pressure derivative B'= 4.5(1). The bulk moduli of the coordination polyhedra are B$_{MnO6}$ = 178(2) GPa, B$_{Ca1O8}$ = 101.2(5) GPa, B$_{Ca2O8}$ = 88.4(8) GPa, B$_{SiO4}$= 337(5) GPa, and B$_{O4H4}$ = 29(1) GPa for the high-spin phase. Mode Gr¨uneisen parameters range between 0.34 and 0.94. The computed spin-pairing energy is ≈3.6 eV at 0 GPa. 000291398 536__ $$0G:(DE-HGF)POF3-6G3$$a6G3 - PETRA III (POF3-622)$$cPOF3-622$$fPOF III$$x0 000291398 536__ $$0G:(DE-H253)I-20130285$$aFS-Proposal: I-20130285 (I-20130285)$$cI-20130285$$x1 000291398 536__ $$0G:(DE-H253)I-20140699$$aFS-Proposal: I-20140699 (I-20140699)$$cI-20140699$$x2 000291398 542__ $$2Crossref$$i2015-07-29$$uhttp://link.aps.org/licenses/aps-default-license 000291398 588__ $$aDataset connected to CrossRef 000291398 693__ $$0EXP:(DE-H253)P-P02.2-20150101$$1EXP:(DE-H253)PETRAIII-20150101$$6EXP:(DE-H253)P-P02.2-20150101$$aPETRA III$$fPETRA Beamline P02.2$$x0 000291398 7001_ $$0P:(DE-H253)PIP1011391$$aWinkler, Björn$$b1 000291398 7001_ $$0P:(DE-H253)PIP1006769$$aMorgenroth, Wolfgang$$b2 000291398 7001_ $$0P:(DE-HGF)0$$aPerlov, Alexander$$b3 000291398 7001_ $$0P:(DE-HGF)0$$aMilman, Victor$$b4 000291398 77318 $$2Crossref$$3journal-article$$a10.1103/physrevb.92.014117$$bAmerican Physical Society (APS)$$d2015-07-29$$n1$$p014117$$tPhysical Review B$$v92$$x1098-0121$$y2015 000291398 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.92.014117$$gVol. 92, no. 1, p. 014117$$n1$$p014117$$tPhysical review / B$$v92$$x1098-0121$$y2015 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.pdf$$yOpenAccess 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.gif?subformat=icon$$xicon$$yOpenAccess 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000291398 8564_ $$uhttps://bib-pubdb1.desy.de/record/291398/files/MilmanPerlov_hydrogarnet_a.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000291398 909CO $$ooai:bib-pubdb1.desy.de:291398$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire 000291398 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1007910$$aExternes Institut$$b0$$k>Extern 000291398 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1011391$$aExternes Institut$$b1$$k>Extern 000291398 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1006769$$aExternes Institut$$b2$$k>Extern 000291398 9131_ $$0G:(DE-HGF)POF3-622$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G3$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vFacility topic: Research on Matter with Brilliant Light Sources$$x0 000291398 9141_ $$y2015 000291398 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000291398 915__ $$0LIC:(DE-HGF)APS-112012$$2HGFVOC$$aAmerican Physical Society Transfer of Copyright Agreement 000291398 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000291398 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000291398 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000291398 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000291398 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000291398 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000291398 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bPHYS REV B : 2014 000291398 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000291398 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz 000291398 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000291398 9201_ $$0I:(DE-H253)HAS-User-20120731$$kDOOR$$lDOOR-User$$x0 000291398 980__ $$ajournal 000291398 980__ $$aVDB 000291398 980__ $$aI:(DE-H253)HAS-User-20120731 000291398 980__ $$aUNRESTRICTED 000291398 9801_ $$aUNRESTRICTED 000291398 9801_ $$aFullTexts 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1016/0016-7037(60)90046-6 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.79.5046 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.82.4663 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.89.205504 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.82.3284 000291398 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.76.094417 000291398 999C5 $$1P. 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