Compound, manufacturing method thereof, and composite material

Abstract

Provided is a novel compound that has a composition different from conventional compounds and exhibits a negative thermal expansion coefficient, preferably, a compound that exhibits an excellent negative thermal expansion coefficient especially in the temperature range of 200-400°C.　A compound represented by composition formula (1): ZrwMxSzP2O12+δ [wherein: M represents one or more elements selected from Al, Fe, Ga, Y, In, Nb, Bi, Si, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Ge and Lu; 0<w≤4; x is the total amount (atomic ratio) of elements constituting M; 0<x<3; 0<z≤2; and δ is a value that is determined to satisfy the charge neutrality condition].

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