Static and Resonant Properties and Magnetic Phase Diagram of LiMn2TeO6

Tatyana Vasilchikova; Evgeniya Vavilova; Timur Salikhov; Vladimir Nalbandyan; Shanu Dengre; Rajib Sarkar; Hans-Henning Klauss; Alexander Vasiliev

doi:10.3390/ma15238694

Static and Resonant Properties and Magnetic Phase Diagram of LiMn₂TeO₆

Materials (Basel). 2022 Dec 6;15(23):8694. doi: 10.3390/ma15238694.

Authors

Tatyana Vasilchikova^{1

2}, Evgeniya Vavilova³, Timur Salikhov³, Vladimir Nalbandyan⁴, Shanu Dengre⁵, Rajib Sarkar⁵, Hans-Henning Klauss⁵, Alexander Vasiliev^{1

2}

Affiliations

¹ Low Temperature Physics and Superconductivity Department, Lomonosov Moscow State University, 119991 Moscow, Russia.
² Functional Quantum Materials Laboratory, National University of Science and Technology "MISiS", 119049 Moscow, Russia.
³ Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, 420029 Kazan, Russia.
⁴ Faculty of Chemistry, Southern Federal University, 344090 Rostov-on-Don, Russia.
⁵ Institute for Solid State and Material Physics, Technische Universität Dresden, 01069 Dresden, Germany.

Abstract

Physical properties of the mixed-valent tellurate of lithium and manganese, LiMn2TeO6, were investigated in measurements of ac and dc magnetic susceptibility χ, magnetization M, specific heat Cp, electron spin resonance (ESR), and nuclear magnetic resonance (NMR) in the temperature range 2−300 K under magnetic field up to 9 T. The title compound orders magnetically in two steps at T1 = 20 K and T2 = 13 K. The intermediate phase at T2 < T < T1 is fully suppressed by magnetic field µ0H of about 4 T. Besides magnetic phases transitions firmly established in static measurements, relaxation-type phenomena were observed well above magnetic ordering temperature in resonant measurements.

Keywords: magnetic phase diagram; manganese oxide; spin order.

Grants and funding

This project was initially developed by Elena Zvereva who passed away early in 2021. A part of the thermodynamic data presented in this paper were obtained by Elena. This research has been supported by the Megagrant program of the Government of Russian Federation through the project 075-15-2021-604. E.V. and T.S would like to thank the financial support from the government assignment for FRC Kazan scientific Center of RAS.