Tuning magnetoelectricity in a mixed-anisotropy antiferromagnet
Ellen Fogh
(1)
,
Bastian Klemke
(2)
,
Manfred Reehuis
(2)
,
Philippe Bourges
(3, 4)
,
Christof Niedermayer
(5)
,
Sonja Holm-Dahlin
(5)
,
Oksana Zaharko
(5)
,
Jürg Schefer
(5)
,
Andreas Kristensen
(6)
,
Michael Sørensen
(6)
,
Sebastian Paeckel
(2, 7, 8)
,
Kasper Pedersen
(6)
,
Rasmus Hansen
(9)
,
Alexandre Pages
(10)
,
Kimmie Moerner
(6)
,
Giulia Meucci
(6)
,
Jian-Rui Soh
(10)
,
Alessandro Bombardi
(11)
,
David Vaknin
(12, 13)
,
Henrik. Rønnow
(10)
,
Olav Syljuåsen
(14)
,
Niels Christensen
(6)
,
Rasmus Toft-Petersen
(6)
1
Department of Physics [Lyngby]
2 HZB - Helmholtz-Zentrum Berlin für Materialien und Energie GmbH = Helmholtz Centre Berlin for Materials and Energy = Centre Helmholtz de Berlin pour les matériaux et l'énergie
3 LLB - UMR 12 - Laboratoire Léon Brillouin
4 NFMQ - LLB - Nouvelles frontières dans les matériaux quantiques
5 LNS - Laboratory for Neutron Scattering and Imaging [Paul Scherrer Institute]
6 Tecnical University of Denmark, Kongens Lyngby
7 ASC - Arnold Sommerfeld Center for Theoretical Physics [München]
8 MCQST - Munich Center for Quantum Science and Technology
9 Department of Photonics Engineering [Lyngby]
10 Laboratory for Quantum Magnetism
11 DIAMOND Light source
12 Ames Laboratory [Ames, USA]
13 Department of Physics and Astronomy [Ames, Iowa]
14 Department of Physics [Oslo]
2 HZB - Helmholtz-Zentrum Berlin für Materialien und Energie GmbH = Helmholtz Centre Berlin for Materials and Energy = Centre Helmholtz de Berlin pour les matériaux et l'énergie
3 LLB - UMR 12 - Laboratoire Léon Brillouin
4 NFMQ - LLB - Nouvelles frontières dans les matériaux quantiques
5 LNS - Laboratory for Neutron Scattering and Imaging [Paul Scherrer Institute]
6 Tecnical University of Denmark, Kongens Lyngby
7 ASC - Arnold Sommerfeld Center for Theoretical Physics [München]
8 MCQST - Munich Center for Quantum Science and Technology
9 Department of Photonics Engineering [Lyngby]
10 Laboratory for Quantum Magnetism
11 DIAMOND Light source
12 Ames Laboratory [Ames, USA]
13 Department of Physics and Astronomy [Ames, Iowa]
14 Department of Physics [Oslo]
Ellen Fogh
- Fonction : Auteur
- PersonId : 1345054
- ORCID : 0000-0001-8305-4466
Philippe Bourges
- Fonction : Auteur
- PersonId : 755859
- ORCID : 0000-0001-9494-0789
Christof Niedermayer
- Fonction : Auteur
- PersonId : 1330035
- ORCID : 0000-0001-6508-8988
Sonja Holm-Dahlin
- Fonction : Auteur
- PersonId : 1345056
- ORCID : 0000-0003-4118-5702
Oksana Zaharko
- Fonction : Auteur
- PersonId : 1156675
- ORCID : 0000-0001-5521-3124
Sebastian Paeckel
- Fonction : Auteur
- PersonId : 1345057
- ORCID : 0000-0001-8107-069X
Kasper Pedersen
- Fonction : Auteur
- PersonId : 1169685
- ORCID : 0000-0002-4381-4544
Jian-Rui Soh
- Fonction : Auteur
- PersonId : 1345058
- ORCID : 0000-0003-2542-6086
Alessandro Bombardi
- Fonction : Auteur
- PersonId : 1345059
- ORCID : 0000-0001-7383-1436
David Vaknin
- Fonction : Auteur
- PersonId : 1345060
- ORCID : 0000-0002-0899-9248
Henrik. Rønnow
- Fonction : Auteur
- PersonId : 1345061
- ORCID : 0000-0002-8832-8865
Olav Syljuåsen
- Fonction : Auteur
- PersonId : 1345062
- ORCID : 0000-0001-5696-865X
Niels Christensen
- Fonction : Auteur
- PersonId : 1197396
- ORCID : 0000-0001-6443-2142
Rasmus Toft-Petersen
- Fonction : Auteur
- PersonId : 1345063
- ORCID : 0000-0001-7638-3675
Résumé
Abstract Control of magnetization and electric polarization is attractive in relation to tailoring materials for data storage and devices such as sensors or antennae. In magnetoelectric materials, these degrees of freedom are closely coupled, allowing polarization to be controlled by a magnetic field, and magnetization by an electric field, but the magnitude of the effect remains a challenge in the case of single-phase magnetoelectrics for applications. We demonstrate that the magnetoelectric properties of the mixed-anisotropy antiferromagnet LiNi 1− x Fe x PO 4 are profoundly affected by partial substitution of Ni 2+ ions with Fe 2+ on the transition metal site. This introduces random site-dependent single-ion anisotropy energies and causes a lowering of the magnetic symmetry of the system. In turn, magnetoelectric couplings that are symmetry-forbidden in the parent compounds, LiNiPO 4 and LiFePO 4 , are unlocked and the dominant coupling is enhanced by almost two orders of magnitude. Our results demonstrate the potential of mixed-anisotropy magnets for tuning magnetoelectric properties.