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Experimentelle Untersuchungen zu Mechanismen von druck- und temperaturinduzierten Phasenübergängen

dc.contributor.advisorSowa, Heidrun Dr.
dc.contributor.authorPukallus, Nina Katrin
dc.date.accessioned2021-10-18T12:11:38Z
dc.date.available2021-10-20T00:50:17Z
dc.date.issued2021-10-18
dc.identifier.urihttp://hdl.handle.net/21.11130/00-1735-0000-0008-5940-C
dc.identifier.urihttp://dx.doi.org/10.53846/goediss-8885
dc.language.isodeude
dc.relation.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc910de
dc.subject.ddc550de
dc.titleExperimentelle Untersuchungen zu Mechanismen von druck- und temperaturinduzierten Phasenübergängende
dc.typedoctoralThesisde
dc.title.translatedExperimental examinations of mechanisms of pressure- and temperature-induced phase transitionsde
dc.contributor.refereeSowa, Heidrun Dr.
dc.date.examination2020-10-22
dc.description.abstractengUnder the influence of pressure and/or temperature changes, crystalline materials undergo a phase transition. The directions of the crystalline unit cell before and after the phase transition can show orientation relations. These orientation relations can give clues about the atomar transition mechanism, which is expressed in group-subgroup relations via a common subgroup of both end configurations. The behaviour of crystalline materials during their phase transition was experimentally studied using synchrotron radiation and a diamond anvil cell respectively a graphite band-heated oven. The following five materials were used: indium arsenide, cadmium sulfide, cadmium selenide, copper indium diselenide and nickel sulfide. For the pressure-induced phase transition of indium arsenide no transformation path with a common subgroup could be found, but the orientation relations between high-pressure and low-pressure phase could be determined and the atomar mechanism of the transition could be derived. The orientation relations between the high-pressure and low-pressure phase of copper indium diselenide pointed to multiple possible transition paths. For the pressure-induced phase transition of cadmium sulfide and cadmium selenide, already assumed orientation relations and their correlating transition path could be confirmed. For the temperature-induced phase transition of nickel sulfide also an already assumed transition path could be confirmed, but no transition path via a common subgroup.de
dc.contributor.coRefereeKlein, Helmut Dr.
dc.contributor.thirdRefereeWebb, Sharon Prof. Dr.
dc.subject.gerKristallographiede
dc.subject.gerPhasenübergangde
dc.subject.gerOrientierungsbeziehungende
dc.subject.gerHalbleiterde
dc.subject.gerIndiumarsenidde
dc.subject.gerKupfer-Indium-Diselenidde
dc.subject.gerKadmiumsulfidde
dc.subject.gerKadmiumselenidde
dc.subject.gerNickelsulfidde
dc.subject.gerSynchrotronstrahlungde
dc.subject.gerDiamantstempelzellede
dc.subject.engcrystallographyde
dc.subject.engphase transitionsde
dc.subject.engorientation relationsde
dc.subject.engsemiconductorsde
dc.subject.engindium arsenidede
dc.subject.engcopper indium diselenidede
dc.subject.engcadmium sulfidede
dc.subject.engcadmium selenidede
dc.subject.engnickel sulfidede
dc.subject.engsynchrotron radiationde
dc.subject.engdiamond-anvil cellde
dc.identifier.urnurn:nbn:de:gbv:7-21.11130/00-1735-0000-0008-5940-C-6
dc.affiliation.instituteFakultät für Geowissenschaften und Geographiede
dc.subject.gokfullGeologische Wissenschaften (PPN62504584X)de
dc.description.embargoed2021-10-20
dc.identifier.ppn1774440105


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