High-pressure behaviour of KMF3 perovskites

Fernando Aguado; Fernando Rodriguez; Shigeto Hirai; Joanna N. Walsh; Alistair Lennie; Simon A.T. Redfern

doi:10.1080/08957950802576464

High-pressure behaviour of KMF3 perovskites

Fernando Aguado^*, Fernando Rodriguez, Shigeto Hirai, Joanna N. Walsh, Alistair Lennie, Simon A.T. Redfern

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

The structural stability of cubic KMF3 (M: Mg, Zn, Co, Ni) perovskites has been studied by powder X-ray diffraction under pressure. Neither superlattice reflections nor peak splitting associated to a phase transition were detected in the 0-10GPa pressure range. Furthermore, KMgF3 showed no structural changes up to 50GPa. The results were compared with previous reports on isostructural KMnF3. Tolerance factor and site parameters ratio have been analysed as high-pressure stability indexes for this family of perovskites.

Original language	English
Pages (from-to)	539-544
Number of pages	6
Journal	High Pressure Research
Volume	28
Issue number	4
DOIs	https://doi.org/10.1080/08957950802576464
Publication status	Published - Dec 2008
Externally published	Yes

ASJC Scopus Subject Areas

Condensed Matter Physics

Keywords

Halides
High pressure
Perovskite
Structural stability

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10.1080/08957950802576464

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AU - Aguado, Fernando

AU - Rodriguez, Fernando

AU - Hirai, Shigeto

AU - Walsh, Joanna N.

AU - Lennie, Alistair

AU - Redfern, Simon A.T.

PY - 2008/12

Y1 - 2008/12

N2 - The structural stability of cubic KMF3 (M: Mg, Zn, Co, Ni) perovskites has been studied by powder X-ray diffraction under pressure. Neither superlattice reflections nor peak splitting associated to a phase transition were detected in the 0-10GPa pressure range. Furthermore, KMgF3 showed no structural changes up to 50GPa. The results were compared with previous reports on isostructural KMnF3. Tolerance factor and site parameters ratio have been analysed as high-pressure stability indexes for this family of perovskites.

AB - The structural stability of cubic KMF3 (M: Mg, Zn, Co, Ni) perovskites has been studied by powder X-ray diffraction under pressure. Neither superlattice reflections nor peak splitting associated to a phase transition were detected in the 0-10GPa pressure range. Furthermore, KMgF3 showed no structural changes up to 50GPa. The results were compared with previous reports on isostructural KMnF3. Tolerance factor and site parameters ratio have been analysed as high-pressure stability indexes for this family of perovskites.

KW - Halides

KW - High pressure

KW - Perovskite

KW - Structural stability

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JF - High Pressure Research

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ER -

High-pressure behaviour of KMF3 perovskites

Abstract

ASJC Scopus Subject Areas

Keywords

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