Measurements of linear thermal expansion by pushrod dilatometry to 1873 K confirm the γ-ray density measurements by Stankus in 1993 which indicated that the coefficient of expansion of chromium increases much more rapidly above ∼1200 K than the heat capacity. The increase in expansion is also much greater than in Mo and W where anharmonicity is important. Magnetic spin effects are a possible source. © 1996 The American Physical Society.

• Received 12 October 1995

DOI:https://doi.org/10.1103/PhysRevB.53.8145