Magnetic frustration in ferromagnetic metallic systems is unusual due to the long-range and symmetric nature of the exchange interactions. In this work we prove that it is possible to obtain a highly frustrated ferromagnetic phase in a multisublattices cubic structure through a fine-tuning of the magnetic interactions. This peculiar state is achieved in Ni-Mn-(In, Sn) Heusler alloys and results in the effective decoupling of their two intertwined ferromagnetic sublattices. One sublattice is ferromagnetic long-range ordered below the macroscopic Curie temperature (TC) whereas the second one remains disordered until a crossover to a polarized state occurs at T≪TC. This result points out that a fine engineering of the magnetic interactions in metallic systems can lead to interesting novel and emergent phenomena.

Effective decoupling of ferromagnetic sublattices by frustration in Heusler alloys / Cugini, F.; Chicco, S.; Orlandi, F.; Allodi, G.; Bonfa, P.; Vezzoni, V.; Miroshkina, O. N.; Gruner, M. E.; Righi, L.; Fabbrici, S.; Albertini, F.; De Renzi, R.; Solzi, M.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 105:17(2022), p. 174434. [10.1103/PhysRevB.105.174434]

Effective decoupling of ferromagnetic sublattices by frustration in Heusler alloys

Bonfa, P.;
2022

Abstract

Magnetic frustration in ferromagnetic metallic systems is unusual due to the long-range and symmetric nature of the exchange interactions. In this work we prove that it is possible to obtain a highly frustrated ferromagnetic phase in a multisublattices cubic structure through a fine-tuning of the magnetic interactions. This peculiar state is achieved in Ni-Mn-(In, Sn) Heusler alloys and results in the effective decoupling of their two intertwined ferromagnetic sublattices. One sublattice is ferromagnetic long-range ordered below the macroscopic Curie temperature (TC) whereas the second one remains disordered until a crossover to a polarized state occurs at T≪TC. This result points out that a fine engineering of the magnetic interactions in metallic systems can lead to interesting novel and emergent phenomena.
2022
105
17
174434
Effective decoupling of ferromagnetic sublattices by frustration in Heusler alloys / Cugini, F.; Chicco, S.; Orlandi, F.; Allodi, G.; Bonfa, P.; Vezzoni, V.; Miroshkina, O. N.; Gruner, M. E.; Righi, L.; Fabbrici, S.; Albertini, F.; De Renzi, R.; Solzi, M.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 105:17(2022), p. 174434. [10.1103/PhysRevB.105.174434]
Cugini, F.; Chicco, S.; Orlandi, F.; Allodi, G.; Bonfa, P.; Vezzoni, V.; Miroshkina, O. N.; Gruner, M. E.; Righi, L.; Fabbrici, S.; Albertini, F.; De ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1369424
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