Negative Thermal Expansion (NTE) in cobalt zirconide. (IMAGE)

Tokyo Metropolitan University

Negative Thermal Expansion (NTE) in cobalt zirconide.

Caption

Negative Thermal Expansion (NTE) in cobalt zirconide. By hydrogenating cobalt zirconide, the team changed the crystalline structure to induce a different form of NTE. While cobalt zirconide shows NTE over a wide temperature range, the same phenomenon in its hydrogenated version is only seen below the Curie temperature, where a ferromagnetic phase is seen.

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Tokyo Metropolitan University

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