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arXiv · 1111.7239

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

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

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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A. V. Pronin, M. Uhlarz, R. Beyer, T. Fischer, J. Wosnitza, B. P. Gorshunov, G. A. Komandin, A. S. Prokhorov, M. Dressel, A. A. Bush, V. I. Torgashev. 2011-11-30. B-T phase diagram of CoCr2O4 in magnetic fields up to 14 T. https://doi.org/10.1103/physrevb.85.012101

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