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Pressure-induced structural transitions in Tb-pyrochlore oxides
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10.1063/1.2165212
/content/aip/journal/apl/88/3/10.1063/1.2165212
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/3/10.1063/1.2165212

Figures

Image of FIG. 1.
FIG. 1.

(Top) High pressure diffraction patterns for , , and at similar pressures. (Bottom) The diffraction patterns of with cubic , Monoclinic and structurally disordered phases. The LeBail refinement showing the calculated line, difference line and phase markers at 71 GPa is also depicted for the monoclinic phase. The arrows indicate the monoclinic splitting.

Image of FIG. 2.
FIG. 2.

Pressure vs volume plot for the Tb pyrochlore oxides. Regions of purely amorphous state are indicated by shading. The continuous lines correspond to fits using the Birch-Murnaghan equation of state. The inset shows variation of the parameter of the oxygen as a function of pressure.

Image of FIG. 3.
FIG. 3.

Raman spectra of at ambient pressure and at 60 GPa. The bending modes are at and stretching modes are at .

Tables

Generic image for table
Table I.

Structural parameters and bulk modulus for Tb-pyrochlore oxides. —transition pressure to the disordered state.

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/content/aip/journal/apl/88/3/10.1063/1.2165212
2006-01-17
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pressure-induced structural transitions in Tb-pyrochlore oxides
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/3/10.1063/1.2165212
10.1063/1.2165212
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