Lattice thermal expansion of zircon-type LuPO4 and LuVO4: A comparative study
-
S. J. Patwe
and
A. K. Tyagi
Abstract
We report the lattice thermal expansion of zircon-(xenotime-)type LuPO4 and LuVO4 in the temperature range of 25-1000 °C from high-temperature powder XRD studies. The details of the high-temperature crystal chemistry of both phases have been determined from Rietveld analysis of the powder XRD data. Both the compounds show appreciably higher thermal expansion than analogous zircon-type silicates. Despite isomorphism, the axial thermal expansion of LuVO4 shows significant anisotropy compared to LuPO4. In the studied temperature range, the average axial thermal expansion coefficients of LuPO4 are αa = 6.0 × 10-6 and αc = 7.2 × 10-6 (°C-1) and those of LuVO4 are αa = 3.6 × 10-6 and αc = 11.8 × 10-6 (°C-1). However, the average volume thermal expansion coefficients are almost identical. The differences in the thermal expansion behavior of the two structures originate from differences in the expansion and distortion of the LuO8 polyhedra. The LuO8 polyhedron in LuVO4 shows about 30% higher thermal expansion than that in LuPO4. The overall thermal expansion behaviors of these two structures are predominantly related to the distortion in the LuO8 unit, inter-cation distances and spatial arrangement of the Lu-O bonds in the structure.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Amorphous materials: Properties, structure, and durability. The viscosity of hydrous NaAlSi3O8 and granitic melts: Configurational entropy models
- Alteration mineralogy and the effect of acid-leaching on the Pb-isotope systematics of ocean-island basalts
- Color origin and heat evidence of paleontological bones: Case study of blue and gray bones from San Josecito Cave, Mexico
- Coexistence of pyroxenes jadeite, omphacite, and diopside/hedenbergite in an albite-omphacite rock from a serpentinite mélange in the Kurosegawa Zone of Central Kyushu, Japan
- Amphibole equilibria in mantle rocks: Determining values of mantle aH2O and implications for mantle H2O contents
- Experimental fluoridation of nanocrystalline apatite
- Dehydration dynamics of barrerite: An in situ synchrotron XRPD study
- Structural features in Tutton’s salts K2[M2+(H2O)6](SO4)2, with M2+ = Mg, Fe, Co, Ni, Cu, and Zn
- Incorporation of water in iron-free ringwoodite: A first-principles study
- Temperature dependence of reflectance spectra and color values of hematite by in situ, high-temperature visible micro-spectroscopy
- Lattice thermal expansion of zircon-type LuPO4 and LuVO4: A comparative study
- Solubility of H2O and CO2 in ultrapotassic melts at 1200 and 1250 °C and pressure from 50 to 500 MPa
- Multi-analytical approach to solve the puzzle of an allanite-subgroup mineral from Kesebol, Västra Götaland, Sweden
- Dislocation modeling in calcium silicate perovskite based on the Peierls-Nabarro model
- Molecular dynamics insight into the cointercalation of hexadecyltrimethyl-ammonium and acetate ions into smectites
- Adding further complexity to the polybasite structure: The role of Ag in the B layer of the -M2a2b2c polytype
- Structural position of H2O molecules and hydrogen bonding in anomalous 11 Å tobermorite
- Electronic structures of siderite (FeCO3) and rhodochrosite (MnCO3): Oxygen K-edge spectroscopy and hybrid density functional theory
- Crystal growth and the fast reaction paradox: Mathematical resolution and implications for habit and compositional zoning
- The composition of KLB-1 peridotite
- Crystal chemistry of the magnetite-ulvöspinel series
- New insights into the crystal structure and crystal chemistry of the zeolite phillipsite
- Letter: Octahedral cation distribution in palygorskite
Articles in the same Issue
- Amorphous materials: Properties, structure, and durability. The viscosity of hydrous NaAlSi3O8 and granitic melts: Configurational entropy models
- Alteration mineralogy and the effect of acid-leaching on the Pb-isotope systematics of ocean-island basalts
- Color origin and heat evidence of paleontological bones: Case study of blue and gray bones from San Josecito Cave, Mexico
- Coexistence of pyroxenes jadeite, omphacite, and diopside/hedenbergite in an albite-omphacite rock from a serpentinite mélange in the Kurosegawa Zone of Central Kyushu, Japan
- Amphibole equilibria in mantle rocks: Determining values of mantle aH2O and implications for mantle H2O contents
- Experimental fluoridation of nanocrystalline apatite
- Dehydration dynamics of barrerite: An in situ synchrotron XRPD study
- Structural features in Tutton’s salts K2[M2+(H2O)6](SO4)2, with M2+ = Mg, Fe, Co, Ni, Cu, and Zn
- Incorporation of water in iron-free ringwoodite: A first-principles study
- Temperature dependence of reflectance spectra and color values of hematite by in situ, high-temperature visible micro-spectroscopy
- Lattice thermal expansion of zircon-type LuPO4 and LuVO4: A comparative study
- Solubility of H2O and CO2 in ultrapotassic melts at 1200 and 1250 °C and pressure from 50 to 500 MPa
- Multi-analytical approach to solve the puzzle of an allanite-subgroup mineral from Kesebol, Västra Götaland, Sweden
- Dislocation modeling in calcium silicate perovskite based on the Peierls-Nabarro model
- Molecular dynamics insight into the cointercalation of hexadecyltrimethyl-ammonium and acetate ions into smectites
- Adding further complexity to the polybasite structure: The role of Ag in the B layer of the -M2a2b2c polytype
- Structural position of H2O molecules and hydrogen bonding in anomalous 11 Å tobermorite
- Electronic structures of siderite (FeCO3) and rhodochrosite (MnCO3): Oxygen K-edge spectroscopy and hybrid density functional theory
- Crystal growth and the fast reaction paradox: Mathematical resolution and implications for habit and compositional zoning
- The composition of KLB-1 peridotite
- Crystal chemistry of the magnetite-ulvöspinel series
- New insights into the crystal structure and crystal chemistry of the zeolite phillipsite
- Letter: Octahedral cation distribution in palygorskite
