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The oxide ZrW2O8 displays unusual property of isotropic negative thermal expansion in a large wide temperature range, which makes it have a number of important potential applications. The cubic Zr1-xHfxW2O8 (x = 0,0.3, 0.5, 0.7, and 1.0) were synthesized by standard solid state reaction technique. The high and low temperature X-ray diffraction analysis indicate that the substitution of the Hf4+ for Zr4+ only leads to reducing the lattice constants, and the changes of negative thermal expansion coefficients are not obvious. The linear expansion coefficients of Zr1-xHfxW2O8 (x = 0, 0.3, 0.5, 0.7, and 1.0) are about -6
The cubic Zr1-xHfxW2O8 (x = 0, 0.3, 0.5, 0.7, and 1.0) were synthesized in a large wide temperature range, which makes it have a number of important potential applications. by standard solid state reaction technique. The high and low temperature X-ray diffraction analysis analysis that the substitution of the Hf4 + for Zr4 + only leads to reducing the lattice constants, and the changes of negative thermal expansion coefficients are not obvious. The linear expansion coefficients of Zr1-xHfxW2O8 (x = 0, 0.3, 0.5, 0.7, and 1.0) are about -6