Short answer: Zirconium tungstate is an oxide ceramic known for negative thermal expansion, contracting when heated. It is used to control thermal expansion in solid materials and composites where dimensional stability matters. Its function arises from lattice-level vibrational mechanisms and depends on phase integrity; it is not a flexible polymer additive or a metallic compensator.

Short answer: Bismuth nickel iron oxide is a bismuth-based multicomponent ceramic oxide studied for negative thermal expansion associated with temperature-driven phase transitions. It is used where dimensional change must be managed in rigid materials. The effect depends on phase composition and thermal history, and it is not a polymeric filler or a metallic expansion compensator.

Short answer: Zirconium phosphotungstate is a framework oxide ceramic exhibiting negative thermal expansion, contracting upon heating. It is used to control dimensional change in composites and solid materials where thermal stability is critical. Its behavior originates from lattice-level vibrational mechanisms and depends on phase integrity; it is not a polymeric or metallic expansion compensator.

Short answer: Copper–zinc–vanadium complex vanadate is an oxide ceramic system investigated for negative thermal expansion behavior. It is used where dimensional change with temperature must be controlled in solid materials and composites. Its function arises from lattice-level mechanisms and depends on phase integrity; it is not a flexible polymer modifier or a metallic compensator.

Short answer: Zirconium sulfate phosphate is an inorganic ceramic material investigated for negative thermal expansion behavior, contracting upon heating in its stable structural form. It fits applications where thermal expansion must be tuned in composites or solid parts. The response is structure-dependent and can disappear if phase integrity is not maintained; it is not a polymeric or metallic compensator.