Field-induced magnetic phase transitions and metastable states in Tb3Ni

A. F. Gubkin, L. S. Wu, S. E. Nikitin, A. V. Suslov, A. Podlesnyak, O. Prokhnenko, K. Prokeš, F. Yokaichiya, L. Keller, N. V. Baranov

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Abstract

In this paper we report the detailed study of magnetic phase diagrams, low-temperature magnetic structures, and the magnetic field effect on the electrical resistivity of the binary intermetallic compound Tb3Ni. The incommensurate magnetic structure of the spin-density-wave type described with magnetic superspace group P1121/a1′(ab0)0ss and propagation vector kIC=0.506,0.299,0 was found to emerge just below Néel temperature TN=61 K. Further cooling below 58 K results in the appearance of multicomponent magnetic states: (i) a combination of k1=12,12,0 and kIC in the temperature range 51<T<58 K; (ii) a mixed magnetic state of kIC, k1, and k2=12,14,0 with the partially locked-in incommensurate component in the temperature range 48<T<51 K; and (iii) a low-temperature magnetic structure that is described by the intersection of two isotropy subgroups associated with the irreducible representations of two coupled primary order parameters (OPs) k2=12,14,0 and k3=12,13,0 and involves irreducible representations of the secondary OPs k1=12,12,0 and k4=12,0,0 below 48 K. An external magnetic field suppresses the complex low-temperature antiferromagnetic states and induces metamagnetic transitions towards a forced ferromagnetic state that are accompanied by a substantial magnetoresistance effect due to the magnetic superzone effect. The forced ferromagnetic state induced after application of an external magnetic field along the b and c crystallographic axes was found to be irreversible below 3 and 8 K, respectively.

Original languageEnglish
Article number134425
JournalPhysical Review B
Volume97
Issue number13
DOIs
StatePublished - Apr 26 2018

Funding

This work was partially supported by FASO Russia (Projects No. AAAA-A18-118020190112-8 and No. AAAA-A18-118020290129-5). This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The National High Magnetic Field Laboratory is supported by National Science Foundation Cooperative Agreement No. DMR-1157490 and the state of Florida. This work is partly based on experiments performed at the Swiss spallation neutron source SINQ, Paul Scherrer Institute, Villigen, Switzerland. S.E.N. acknowledges support from the International Max Planck Research School for Chemistry and Physics of Quantum Materials (IMPRS-CPQM).

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