B-T phase diagram of CoCr2O4 in magnetic fields up to 14 T


B-T phase diagram of CoCr2O4 in magnetic fields up to 14 T

Pronin, A. V.; Uhlarz, M.; Beyer, R.; Fischer, T.; Wosnitza, J.; Gorshunov, B. P.; Komandin, G. A.; Prokhorov, A. S.; Dressel, M.; Bush, A. A.; Torgashev, V. I.

We have measured the magnetization and specific heat of multiferroic CoCr2O4 in magnetic fields up to 14 T. The high-field magnetization measurements indicate a new phase transition at T = 5–6 K. The phase between T and the lock-in transition at 15 K is characterized by magnetic irreversibility. At higher magnetic fields, the irreversibility increases. Specific-heat measurements confirm the transition at T , and also show irreversible behavior. We construct a field-temperature phase diagram of CoCr2O4.

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Publ.-Id: 16633