ACTA

Phase Diagram of TmB₄ Probed by AC Calorimetry

J. Kačmarčík^a, Z. Pribulová^a, S. Gabáni^a, P. Samuely^a, K. Siemensmeyer^b, N. Shitsevalova^c and K. Flachbart^a
^aCentre of Low Temperature Physics, IEP SAS & FS UPJŠ, Watsonova 47, 040 01 Košice, Slovakia
^bHahn Meitner Institut Berlin, Glienicker Str. 100, D-14109 Berlin, Germany
^cInstitute for Problems of Materials Science, Ukrainian Academy of Sciences, Krzhyzhanovsky 3, UA-03680 Kiev, Ukraine

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TmB₄ is a frustrated system based on the Shastry-Sutherland lattice that exhibits complex magnetic properties. In this contribution the magnetic field B vs. temperature T phase diagram of TmB₄ has been studied by ultrasensitive AC calorimetry in the temperature range between 2.9 and 12 K and in magnetic fields up to 8 T. Apart from already known phases our measurements have recognized several new phase transitions suggesting that the phase diagram of TmB₄ is even more complex and deserves further studies.

DOI: 10.12693/APhysPolA.118.903
PACS numbers: 75.30.Kz, 75.50.Ee