Publications by Miho Takasu

Publications by authors named "Miho Takasu"

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Negative Thermal Expansion in Fluoroapatite Pb(VO)F Enhanced by the Steric Effect of Pb.

Kengo Oka Miho Takasu Wataru Nishiki Takumi Nishikubo Masaki Azuma

Inorg Chem

August 2022

Negative thermal expansion (NTE) is an unusual thermophysical phenomenon and has gained attention as a way of controlling thermal expansion. Here, we report a substantial NTE in fluoroapatite Pb(VO)F in a limited temperature range. The dilatometric study revealed volume shrinkage below 150 K, giving a linear thermal expansion coefficient of α = -44 ppm/K in the temperature range from 140 to 120 K upon heating.

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