Pressure-induced transformations in crystalline and vitreous PbGeO3

Erin N. Oelker; M. Harish Bhat; Emmanuel Soignard; Jeffery Yarger

doi:10.1016/j.ssc.2009.07.052

Pressure-induced transformations in crystalline and vitreous PbGeO₃

Erin N. Oelker, M. Harish Bhat, Emmanuel Soignard, Jeffery Yarger

Molecular Sciences, School of (SMS)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Structural transitions in crystalline and vitreous PbGeO₃ were studied at pressures up to 20 GPa. Crystalline PbGeO₃ was observed to undergo a pressure-induced amorphization between 12-18 GPa. Vitreous PbGeO₃ was found to exhibit an amorphous-to-amorphous transition in a similar pressure range. The structural and thermal properties of the pressure-cycled PbGeO₃ materials were further studied with high-energy x-ray diffraction and differential scanning calorimetry. The properties were then compared to those of thermally quenched glass and ball-milled PbGeO₃ samples. The structure of pressure-amorphized PbGeO₃ was found to closely resemble that of ball-milled PbGeO₃. However, the thermal properties probed by differential scanning calorimetry exhibited significant differences to those of thermally quenched PbGeO₃ glass.

Original language	English (US)
Pages (from-to)	1940-1943
Number of pages	4
Journal	Solid State Communications
Volume	149
Issue number	43-44
DOIs	https://doi.org/10.1016/j.ssc.2009.07.052
State	Published - Nov 2009

Keywords

A. Disordered systems
D. Phase transitions

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2009.07.052

Cite this

@article{e41a6fa40f8b4d95a62fb2cd600e3629,

title = "Pressure-induced transformations in crystalline and vitreous PbGeO3",

abstract = "Structural transitions in crystalline and vitreous PbGeO3 were studied at pressures up to 20 GPa. Crystalline PbGeO3 was observed to undergo a pressure-induced amorphization between 12-18 GPa. Vitreous PbGeO3 was found to exhibit an amorphous-to-amorphous transition in a similar pressure range. The structural and thermal properties of the pressure-cycled PbGeO3 materials were further studied with high-energy x-ray diffraction and differential scanning calorimetry. The properties were then compared to those of thermally quenched glass and ball-milled PbGeO3 samples. The structure of pressure-amorphized PbGeO3 was found to closely resemble that of ball-milled PbGeO3. However, the thermal properties probed by differential scanning calorimetry exhibited significant differences to those of thermally quenched PbGeO3 glass.",

keywords = "A. Disordered systems, D. Phase transitions",

author = "Oelker, {Erin N.} and {Harish Bhat}, M. and Emmanuel Soignard and Jeffery Yarger",

note = "Funding Information: This work was supported in part by the National Nuclear Security Administration Carnegie/DOE Alliance Center (NNSA CDAC). We would also like to thank Kurt Leinenweber for assistance with the multi-anvil presses. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.",

year = "2009",

month = nov,

doi = "10.1016/j.ssc.2009.07.052",

language = "English (US)",

volume = "149",

pages = "1940--1943",

journal = "Solid State Communications",

issn = "0038-1098",

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number = "43-44",

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AU - Oelker, Erin N.

AU - Harish Bhat, M.

AU - Soignard, Emmanuel

AU - Yarger, Jeffery

N1 - Funding Information: This work was supported in part by the National Nuclear Security Administration Carnegie/DOE Alliance Center (NNSA CDAC). We would also like to thank Kurt Leinenweber for assistance with the multi-anvil presses. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

PY - 2009/11

Y1 - 2009/11

N2 - Structural transitions in crystalline and vitreous PbGeO3 were studied at pressures up to 20 GPa. Crystalline PbGeO3 was observed to undergo a pressure-induced amorphization between 12-18 GPa. Vitreous PbGeO3 was found to exhibit an amorphous-to-amorphous transition in a similar pressure range. The structural and thermal properties of the pressure-cycled PbGeO3 materials were further studied with high-energy x-ray diffraction and differential scanning calorimetry. The properties were then compared to those of thermally quenched glass and ball-milled PbGeO3 samples. The structure of pressure-amorphized PbGeO3 was found to closely resemble that of ball-milled PbGeO3. However, the thermal properties probed by differential scanning calorimetry exhibited significant differences to those of thermally quenched PbGeO3 glass.

AB - Structural transitions in crystalline and vitreous PbGeO3 were studied at pressures up to 20 GPa. Crystalline PbGeO3 was observed to undergo a pressure-induced amorphization between 12-18 GPa. Vitreous PbGeO3 was found to exhibit an amorphous-to-amorphous transition in a similar pressure range. The structural and thermal properties of the pressure-cycled PbGeO3 materials were further studied with high-energy x-ray diffraction and differential scanning calorimetry. The properties were then compared to those of thermally quenched glass and ball-milled PbGeO3 samples. The structure of pressure-amorphized PbGeO3 was found to closely resemble that of ball-milled PbGeO3. However, the thermal properties probed by differential scanning calorimetry exhibited significant differences to those of thermally quenched PbGeO3 glass.

KW - A. Disordered systems

KW - D. Phase transitions

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