Electric field modulation of the tetragonal domain orientation revealed in the magnetic ground state of quantum paraelectric EuTiO3
作者： A. P. Petrović , Y. Kato , S. S. Sunku , T. Ito , P. Sengupta
DOI: 10.1103/PHYSREVB.87.064103
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摘要: The magnetic properties of single-crystal EuTiO3 are suggestive nanoscale disorder below its cubic-tetragonal phase transition. We demonstrate that electric field cooling acts to restore monocrystallinity, thus confirming emergent structural is an intrinsic low-temperature property this material. Using torque magnetometry, we deduce tetragonal enters easy-axis antiferromagnetic at 5.6 K, with a first-order transition easy-plane ground state 3 K. Our data reproduced by 3D anisotropic Heisenberg spin model.
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