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The crystal structure of GaPO4 at high pressure

Published/Copyright: July 28, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 209 Issue 12

Abstract

Single-crystal structure refinements of the low-temperature quartz modification of GaPO4 were performed up to 6.80(7) GPa.

The refinements were carried out in space group P3121. At ambient conditions the lattice parameters are a = 4.9043(7) Å and c = 11.4079(5) Å. They decrease to a = 4.6421(8) Å and c = 10.8022(6) Å at 6.80(7) GPa. Powder diffraction studies indicate that a pressure induced amorphization takes place at about 9 GPa.

The high pressure behavior of GaPO4 is similiar to that of the homeotypic compounds quartz and GeO2, and to that of the isotypic compounds AlPO4 and AlAsO4. Structural changes with increasing pressure are characterized by an increasing c/a axial ratio, increasing distortions of the GaO4 and PO4 tetrahedra, and decreasing (Ga–O–P) angles which indicate a cooperative tilting of the tetrahedra.

As in the case of other quartz-type structures, the high-pressure behavior of GaPO4 is determined by changes of the oxygen packing towards a cubic body-centered lattice. Structural changes occuring at varying temperatures are slightly different from pressure-induced changes.

Published Online: 2010-7-28
Published in Print: 1994-12-1

© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München

Articles in the same Issue

  1. A routine for generating the structure of an icosahedral quasicrystal
  2. Absorption correction in non-spherical ground single crystals
  3. The magnetic structure of α-MnMoO4
  4. A powder neutron diffraction study of λ and γ manganese dioxide and of LiMn2O4
  5. Synthesis and X-ray structure of hexakis (N,N-dimethylacetamide-O)magnesium tetrachloromagnesate
  6. The crystal structure of La2Fe25P12
  7. The crystal structure of GaPO4 at high pressure
  8. Crystal structures of dibutyltin salicyldehydethiosemicarbazate and dibutyltin salicyldehydesemicarbazate
  9. The crystal structure and spectra of [bis(dianilino-1,2-ethane) (trifluoroacetylacetonato)nickel(II)] perchlorate
  10. Crystal structures of nickel(II) and copper(Il)-Schiff-bases complexes with tetramic and tetronic acid subunits
  11. Crystal structure and spectra of the mixed-ligands complex 1-(2-thenoyl)-2-(2,2′-dipyridyl methylene)hydrazino-acetato lead (II)
  12. Crystal structure of racemic trans-2-(4-methylphenyl)-cyclohexyl chloroacetate
  13. Tl+ ionic conductivity in Tl3BX4 crystals (B = V, Nb, Ta; X = S, Se)
  14. Crystal structure of 2,4,6,8,10-hexaoxa-1,3,5,7-tetraphosphatricyclo [3.3.1.1] decane 1,3,5,7-tetrasulfide, O6P4S4
  15. Crystal structure of 2-benzamido-3-benzoyloxybenzoic acid, C21H15O5N
  16. Crystal structure of trans-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-3-methyl-5-(1-(E)-propenyl)benzofuran, C20H22O4
  17. Crystal structure of (E)-2,3-bis(3,4-dimethoxyphenyl)-2-propen-1-0l, C19H22O5
  18. Crystal structure of bis(methoxyphenyl)ditelluride, Te2O2C14H14
  19. Crystal structure of (2R,6R)-2,6-dimethyl-2-bis(phenylseleno)-methylcyclohexanone, Se2OC21H24
  20. Crystal structure of head-to-tail photodimer of 9-phenylanthracene, C40H28
  21. Crystal structure of 9,10-dibenzoylanthracene, C28H18O2
  22. Crystal structure of 2-phenyl-1-(3-phenyloxiran-2-yl)-1,2-ethanediol, C16H16O3
  23. Crystal structure of μ-hydrido-μ-cyclohexylphosphido-octacarbonyl-dimanganese,(H)(PH(C6H11))(CO)8Mn2
  24. Crystal structure of 4-ethyl[2.2]paracyclophane, C18H20
  25. Crystal structure of 9H,10H-9-hydroxy-9-dichloromethyl-anthracene-10-one: 9H,10H-9,10-dihydroxy- 9,10-bis-(chloromethyl)anthracene (2:1), 2(C15H10O2Cl2) · C16H12O2Cl4
  26. Crystal structure of (8,9-dimethoxy-2-methylene-2,3,3a,5,6,10b-hexahydro-1H-4-aza-benzo[e] azulen-4-yl)-p-toluenesulfone, C23H27NO4S
  27. Einführung in die Festkörperphysik.
  28. Glasfehler.
  29. Dislocations and Disclinations.
  30. Historical Atlas of Crystallography.
  31. Numerical Data and Functional Relationships in Science and technology – New Series.
  32. Numerical Data and Functional Relationships in Science and Technology – New Series.
  33. Einführung in die Röntgenfeinstrukturanalyse.
  34. Supraleitung. Grundlagen und Anwendungen.
https://doi.org/10.1524/zkri.1994.209.12.954

Articles in the same Issue

  1. A routine for generating the structure of an icosahedral quasicrystal
  2. Absorption correction in non-spherical ground single crystals
  3. The magnetic structure of α-MnMoO4
  4. A powder neutron diffraction study of λ and γ manganese dioxide and of LiMn2O4
  5. Synthesis and X-ray structure of hexakis (N,N-dimethylacetamide-O)magnesium tetrachloromagnesate
  6. The crystal structure of La2Fe25P12
  7. The crystal structure of GaPO4 at high pressure
  8. Crystal structures of dibutyltin salicyldehydethiosemicarbazate and dibutyltin salicyldehydesemicarbazate
  9. The crystal structure and spectra of [bis(dianilino-1,2-ethane) (trifluoroacetylacetonato)nickel(II)] perchlorate
  10. Crystal structures of nickel(II) and copper(Il)-Schiff-bases complexes with tetramic and tetronic acid subunits
  11. Crystal structure and spectra of the mixed-ligands complex 1-(2-thenoyl)-2-(2,2′-dipyridyl methylene)hydrazino-acetato lead (II)
  12. Crystal structure of racemic trans-2-(4-methylphenyl)-cyclohexyl chloroacetate
  13. Tl+ ionic conductivity in Tl3BX4 crystals (B = V, Nb, Ta; X = S, Se)
  14. Crystal structure of 2,4,6,8,10-hexaoxa-1,3,5,7-tetraphosphatricyclo [3.3.1.1] decane 1,3,5,7-tetrasulfide, O6P4S4
  15. Crystal structure of 2-benzamido-3-benzoyloxybenzoic acid, C21H15O5N
  16. Crystal structure of trans-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-3-methyl-5-(1-(E)-propenyl)benzofuran, C20H22O4
  17. Crystal structure of (E)-2,3-bis(3,4-dimethoxyphenyl)-2-propen-1-0l, C19H22O5
  18. Crystal structure of bis(methoxyphenyl)ditelluride, Te2O2C14H14
  19. Crystal structure of (2R,6R)-2,6-dimethyl-2-bis(phenylseleno)-methylcyclohexanone, Se2OC21H24
  20. Crystal structure of head-to-tail photodimer of 9-phenylanthracene, C40H28
  21. Crystal structure of 9,10-dibenzoylanthracene, C28H18O2
  22. Crystal structure of 2-phenyl-1-(3-phenyloxiran-2-yl)-1,2-ethanediol, C16H16O3
  23. Crystal structure of μ-hydrido-μ-cyclohexylphosphido-octacarbonyl-dimanganese,(H)(PH(C6H11))(CO)8Mn2
  24. Crystal structure of 4-ethyl[2.2]paracyclophane, C18H20
  25. Crystal structure of 9H,10H-9-hydroxy-9-dichloromethyl-anthracene-10-one: 9H,10H-9,10-dihydroxy- 9,10-bis-(chloromethyl)anthracene (2:1), 2(C15H10O2Cl2) · C16H12O2Cl4
  26. Crystal structure of (8,9-dimethoxy-2-methylene-2,3,3a,5,6,10b-hexahydro-1H-4-aza-benzo[e] azulen-4-yl)-p-toluenesulfone, C23H27NO4S
  27. Einführung in die Festkörperphysik.
  28. Glasfehler.
  29. Dislocations and Disclinations.
  30. Historical Atlas of Crystallography.
  31. Numerical Data and Functional Relationships in Science and technology – New Series.
  32. Numerical Data and Functional Relationships in Science and Technology – New Series.
  33. Einführung in die Röntgenfeinstrukturanalyse.
  34. Supraleitung. Grundlagen und Anwendungen.
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