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he complex oxide Dy10W2O21 was synthesized by a solid-state reaction and isolated in cubic symmetry by an X-ray diffractometry (XRD) method. Differential scanning calorimetry (DSC) measurements show that the compound is thermodynamically stable. The intrinsic thermal expansion coefficients were determined by extra-power powder X-ray diffractometry from room temperature to 1 000℃: linear coefficient a = 1.07 × 10-5 ℃-1 and bulk coefficient β= 3.20 × 10-5 ℃-1. Dilatometry was used to measure the extrinsic thermal expansion coefficient (9.2×10-6℃-1).
he complex oxide Dy10W2O21 was synthesized by a solid-state reaction and isolated in cubic symmetry by an X-ray diffractometry (XRD) method. Differential scanning calorimetry (DSC) measurements show that the compound is thermodynamically stable. The intrinsic thermal expansion coefficients were determined by extra-power powder X-ray diffractometry from room temperature to 1 000 ° C: linear coefficient a = 1.07 × 10 -5 ° C -1 and bulk coefficient β = 3.20 × 10 -5 ° C -1 Dilatometry was used to measure the extrinsic thermal expansion coefficient (9.2 × 10-6 ℃ -1).