SIMULTANEOUS OBSERVATION OF HYPERFINE MULTISTAGE TRANSITIONS OF BATIO3 WITH THERMAL ANALYSIS AND THERMAL EXPANSION

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Abstract

A new method to measure heat flux and thermal expansion simultaneously with a temperature resolution of milli-Kelvin is presented to observe the multistage transitions. At least six thermal anomalies are observed between 402 and 403 K in BaTiO3 simultaneously in heat flux and thermal expansion in the cooling process. The correspondence of the anomalies observed in the two physical properties is excellent.

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