High-Pressure phase transition in67ZnO

H. Karzel; W. Potzel; C. Schäfer; M. Steiner; J. Moser; W. Schiessl; M. Peter; G. M. Kalvius; Dale W. Mitchell; S. B. Sulaiman; N. Sahoo; T. P. Das

doi:10.1007/BF02397513

High-Pressure phase transition in⁶⁷ZnO

H. Karzel, W. Potzel, C. Schäfer, M. Steiner, J. Moser, W. Schiessl, M. Peter, G. M. Kalvius, Dale W. Mitchell, S. B. Sulaiman, N. Sahoo, T. P. Das

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6 Scopus citations

Abstract

Using a high-pressure Mössbauer spectrometer for the 93.3-keV resonance in⁶⁷Zn and an X-ray diffractometer of the Guinier type⁶⁷ZnO powder was investigated at pressures up to ≈19% at the phase transition. Surprisingly, the center shift (CS) of the cubic phase is by ≈20μm/s more negative than CS of the wurtzite structure. The Mössbauer data as well as theoretical cluster calculations show that the volume collapse is mainly due to the increase in coordination number of nearest-neighbour (nn) atoms. Covalency of the Zn-O bond, however, is reduced due to a≈7% increase of nn distance.

Original language	English (US)
Pages (from-to)	1067-1070
Number of pages	4
Journal	Hyperfine Interactions
Volume	70
Issue number	1-4
DOIs	https://doi.org/10.1007/BF02397513
State	Published - Apr 1992
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

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10.1007/BF02397513

Cite this

@article{ca1f1bd3be9d4da4abaf852476dca933,

title = "High-Pressure phase transition in67ZnO",

abstract = "Using a high-pressure M{\"o}ssbauer spectrometer for the 93.3-keV resonance in67Zn and an X-ray diffractometer of the Guinier type67ZnO powder was investigated at pressures up to ≈19% at the phase transition. Surprisingly, the center shift (CS) of the cubic phase is by ≈20μm/s more negative than CS of the wurtzite structure. The M{\"o}ssbauer data as well as theoretical cluster calculations show that the volume collapse is mainly due to the increase in coordination number of nearest-neighbour (nn) atoms. Covalency of the Zn-O bond, however, is reduced due to a≈7% increase of nn distance.",

author = "H. Karzel and W. Potzel and C. Sch{\"a}fer and M. Steiner and J. Moser and W. Schiessl and M. Peter and Kalvius, {G. M.} and Mitchell, {Dale W.} and Sulaiman, {S. B.} and N. Sahoo and Das, {T. P.}",

year = "1992",

month = apr,

doi = "10.1007/BF02397513",

language = "English (US)",

volume = "70",

pages = "1067--1070",

journal = "Hyperfine Interactions",

issn = "0304-3843",

publisher = "Springer Netherlands",

number = "1-4",

}

TY - JOUR

T1 - High-Pressure phase transition in67ZnO

AU - Karzel, H.

AU - Potzel, W.

AU - Schäfer, C.

AU - Steiner, M.

AU - Moser, J.

AU - Schiessl, W.

AU - Peter, M.

AU - Kalvius, G. M.

AU - Mitchell, Dale W.

AU - Sulaiman, S. B.

AU - Sahoo, N.

AU - Das, T. P.

PY - 1992/4

Y1 - 1992/4

N2 - Using a high-pressure Mössbauer spectrometer for the 93.3-keV resonance in67Zn and an X-ray diffractometer of the Guinier type67ZnO powder was investigated at pressures up to ≈19% at the phase transition. Surprisingly, the center shift (CS) of the cubic phase is by ≈20μm/s more negative than CS of the wurtzite structure. The Mössbauer data as well as theoretical cluster calculations show that the volume collapse is mainly due to the increase in coordination number of nearest-neighbour (nn) atoms. Covalency of the Zn-O bond, however, is reduced due to a≈7% increase of nn distance.

AB - Using a high-pressure Mössbauer spectrometer for the 93.3-keV resonance in67Zn and an X-ray diffractometer of the Guinier type67ZnO powder was investigated at pressures up to ≈19% at the phase transition. Surprisingly, the center shift (CS) of the cubic phase is by ≈20μm/s more negative than CS of the wurtzite structure. The Mössbauer data as well as theoretical cluster calculations show that the volume collapse is mainly due to the increase in coordination number of nearest-neighbour (nn) atoms. Covalency of the Zn-O bond, however, is reduced due to a≈7% increase of nn distance.

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DO - 10.1007/BF02397513

M3 - Article

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VL - 70

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EP - 1070

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-4

ER -

High-Pressure phase transition in⁶⁷ZnO

Abstract

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