Effects of pressure on the structure and lattice dynamics of TmPO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>4</mml:mn></mml:msub></mml:math>: Experiments and calculations

Stavrou, Elissaios; Tatsi, A.; Raptis, Constantine A.; Efthimiopoulos, Ilias; Syassen, K.; Múñoz, A.; Rodríguez‐Hernández, P.; López-Solano, J.; Hanfland, Michael

doi:10.1103/physrevb.85.024117

Cited by 32 publications

(47 citation statements)

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“…A similar behavior is visible in the c/a dependence on pressure for YVO 4 in one of the first papers in this field [45], and has been recently found in experimental studies of TmPO 4 [52], YPO 4 [53], as well as in theoretical studies on DyVO 4 [54].…”

Section: Experimental Results On the Structure And Eos Of Euvomentioning

confidence: 50%

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

Paszkowicz

López-Solano

Piszora

et al. 2015

Journal of Alloys and Compounds

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Section: Experimental Results On the Structure And Eos Of Euvomentioning

confidence: 50%

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

Paszkowicz

López-Solano

Piszora

et al. 2015

Journal of Alloys and Compounds

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“…The xenotime REPO 4 with the smallest cation used for comparison is TmPO 4 and it has been observed to transform to both the monazite and scheelite phases. Through X‐ray diffraction (XRD) the xenotime‐monazite transformation pressure for TmPO 4 was measured at 20.3 GPa and 21.2 GPa in two separate studies. Adjacent xenotime REPO 4 s with larger cations transformed at 17.3 GPa for ErPO 4 and 18.8 GPa for HoPO 4 —all measured by XRD.…”

Section: Introductionmentioning

confidence: 99%

In situ Raman spectroscopy of pressure‐induced phase transformations in polycrystalline TbPO₄, DyPO₄, and Gd_xDy_(1−x)PO₄

et al. 2018

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Xenotime DyPO4 and GdxDy(1−x)PO4 (x = 0.4, 0.5, 0.6) (tetragonal I41amd zircon structure) have been studied at ambient temperature under high pressures inside a diamond anvil cell with in situ Raman spectroscopy. The typical Raman‐active modes of the xenotime structure were observed at low pressures and the appearance of new Raman peaks at higher pressures indicated a phase transformation to a lower symmetry structure—likely monoclinic. Raman mode softening was observed, resulting in a line crossing at approximately 7‐8 GPa for each material and preceding the phase transformation. The onset of phase transformation for DyPO4 occurred at a pressure of 15.3 GPa. DyPO4 underwent a reversible phase transformation and returned to the xenotime phase after decompression. The transformation pressures of the solid solutions (GdxDy(1−x)PO4) were in the range 10‐12 GPa. The GdxDy(1−x)PO4 solid solutions yielded partially reversible phase transformations, retaining some of the high‐pressure phase spectrum while reforming xenotime peaks during decompression. The substitution of Gd into DyPO4 decreased the transformation pressure relative to pure DyPO4. The ability to modify the phase transformation pressures of xenotime rare‐earth orthophosphates by chemical variations of solid solutions may provide additional methods to improve the performance of ceramic matrix composites.

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“…7. We believe the presence of this mode and the two Raman-active soft modes are related to mechanical instabilities of the zircon structure [57].…”

Section: Lattice-dynamics Calculationsmentioning

confidence: 99%

High-pressure polymorphs of TbVO4: A Raman and ab initio study

Errandonea

Manjón

Múñoz

et al. 2013

Journal of Alloys and Compounds

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Effects of pressure on the structure and lattice dynamics of TmPO4: Experiments and calculations

Cited by 32 publications

References 44 publications

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

In situ Raman spectroscopy of pressure‐induced phase transformations in polycrystalline TbPO₄, DyPO₄, and Gd_xDy_(1−x)PO₄

High-pressure polymorphs of TbVO4: A Raman and ab initio study

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Effects of pressure on the structure and lattice dynamics of TmPO4: Experiments and calculations

Cited by 32 publications

References 44 publications

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

Equation of state and electronic properties of EuVO4: A high-pressure experimental and computational study

In situ Raman spectroscopy of pressure‐induced phase transformations in polycrystalline TbPO4, DyPO4, and GdxDy(1−x)PO4

High-pressure polymorphs of TbVO4: A Raman and ab initio study

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In situ Raman spectroscopy of pressure‐induced phase transformations in polycrystalline TbPO₄, DyPO₄, and Gd_xDy_(1−x)PO₄