Effective decoupling of ferromagnetic sublattices by frustration in Heusler alloys

被引：12

作者：

Cugini, F. ^{[1
,2
]}

Chicco, S. ^{[1
]}

Orlandi, F. ^{[3
]}

Allodi, G. ^{[1
]}

Bonfa, P. ^{[1
]}

Vezzoni, V. ^{[1
]}

Miroshkina, O. N. ^{[4
,5
]}

Gruner, M. E. ^{[4
,5
]}

Righi, L. ^{[2
,6
]}

Fabbrici, S. ^{[2
]}

Albertini, F. ^{[2
]}

De Renzi, R. ^{[1
]}

Solzi, M. ^{[1
,2
]}

机构：

[1] Univ Parma, Dept Math Phys & Comp Sci, Parco Area Sci 7 A, I-43124 Parma, Italy

[2] IMEM CNR, Inst Mat Elect & Magnetism, Natl Res Council, Parco Area Sci 37 A, I-43124 Parma, Italy

[3] Rutherford Appleton Lab, ISIS Pulsed Neutron Fac, STFC, Chilton OX110QX, England

[4] Univ Duisburg Essen, Dept Phys, Lotharstr 1, D-47048 Duisburg, Germany

[5] Univ Duisburg Essen, Ctr Nanointegrat, CENIDE, Lotharstr 1, D-47048 Duisburg, Germany

[6] Univ Parma, Dept Chem Life Sci & Environm Sustainabil, Parco Area Sci 11 A, I-43124 Parma, Italy

来源：

PHYSICAL REVIEW B | 2022年 / 105卷 / 17期

关键词：

SPIN; STATE;

D O I：

10.1103/PhysRevB.105.174434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：6

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