Design of magnetic spirals in layered perovskites

Extending the stability range far beyond room temperature

Tian Shang*, Emmanuel Canévet, Mickaël Morin, Denis Sheptyakov, María Teresa Fernández-Díaz, Ekaterina Pomjakushina, Marisa Medarde

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electronic devices. Advances toward technological applications have been hindered, however, by the relatively low ordering temperatures Tspiral of most magnetic spiral phases, which rarely exceed 100 K. We have recently established that the ordering temperature of a magnetic spiral can be increased up to 310 K by the introduction of chemical disorder. Here, we explore the design space opened up by this novel mechanism by combining it with a targeted lattice control of some magnetic interactions. In Cu-Fe layered perovskites, we obtain Tspiral values close to 400 K, comfortably far from room temperature and almost 100 K higher than using chemical disorder alone. Moreover, we reveal a linear relationship between the spiral's wave vector and the onset temperature of the spiral phase. This linear law ends at a paramagnetic-collinear-spiral triple point, which defines the highest spiral ordering temperature that can be achieved in this class of materials. On the basis of these findings, we propose a general set of rules for designing magnetic spirals in layered perovskites using external pressure, chemical substitutions, and/or epitaxial strain, which should guide future efforts to engineer magnetic spiral phases with ordering temperatures suitable for technological applications.

Original languageEnglish
Article numberaau6386
JournalScience Advances
Volume4
Issue number10
Number of pages11
ISSN2375-2548
DOIs
Publication statusPublished - 2018

Cite this

Shang, T., Canévet, E., Morin, M., Sheptyakov, D., Fernández-Díaz, M. T., Pomjakushina, E., & Medarde, M. (2018). Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature. Science Advances, 4(10), [aau6386]. https://doi.org/10.1126/sciadv.aau6386
Shang, Tian ; Canévet, Emmanuel ; Morin, Mickaël ; Sheptyakov, Denis ; Fernández-Díaz, María Teresa ; Pomjakushina, Ekaterina ; Medarde, Marisa. / Design of magnetic spirals in layered perovskites : Extending the stability range far beyond room temperature. In: Science Advances. 2018 ; Vol. 4, No. 10.
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abstract = "In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electronic devices. Advances toward technological applications have been hindered, however, by the relatively low ordering temperatures Tspiral of most magnetic spiral phases, which rarely exceed 100 K. We have recently established that the ordering temperature of a magnetic spiral can be increased up to 310 K by the introduction of chemical disorder. Here, we explore the design space opened up by this novel mechanism by combining it with a targeted lattice control of some magnetic interactions. In Cu-Fe layered perovskites, we obtain Tspiral values close to 400 K, comfortably far from room temperature and almost 100 K higher than using chemical disorder alone. Moreover, we reveal a linear relationship between the spiral's wave vector and the onset temperature of the spiral phase. This linear law ends at a paramagnetic-collinear-spiral triple point, which defines the highest spiral ordering temperature that can be achieved in this class of materials. On the basis of these findings, we propose a general set of rules for designing magnetic spirals in layered perovskites using external pressure, chemical substitutions, and/or epitaxial strain, which should guide future efforts to engineer magnetic spiral phases with ordering temperatures suitable for technological applications.",
author = "Tian Shang and Emmanuel Can{\'e}vet and Micka{\"e}l Morin and Denis Sheptyakov and Fern{\'a}ndez-D{\'i}az, {Mar{\'i}a Teresa} and Ekaterina Pomjakushina and Marisa Medarde",
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Shang, T, Canévet, E, Morin, M, Sheptyakov, D, Fernández-Díaz, MT, Pomjakushina, E & Medarde, M 2018, 'Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature', Science Advances, vol. 4, no. 10, aau6386. https://doi.org/10.1126/sciadv.aau6386

Design of magnetic spirals in layered perovskites : Extending the stability range far beyond room temperature. / Shang, Tian; Canévet, Emmanuel; Morin, Mickaël; Sheptyakov, Denis; Fernández-Díaz, María Teresa; Pomjakushina, Ekaterina; Medarde, Marisa.

In: Science Advances, Vol. 4, No. 10, aau6386, 2018.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Design of magnetic spirals in layered perovskites

T2 - Extending the stability range far beyond room temperature

AU - Shang, Tian

AU - Canévet, Emmanuel

AU - Morin, Mickaël

AU - Sheptyakov, Denis

AU - Fernández-Díaz, María Teresa

AU - Pomjakushina, Ekaterina

AU - Medarde, Marisa

PY - 2018

Y1 - 2018

N2 - In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electronic devices. Advances toward technological applications have been hindered, however, by the relatively low ordering temperatures Tspiral of most magnetic spiral phases, which rarely exceed 100 K. We have recently established that the ordering temperature of a magnetic spiral can be increased up to 310 K by the introduction of chemical disorder. Here, we explore the design space opened up by this novel mechanism by combining it with a targeted lattice control of some magnetic interactions. In Cu-Fe layered perovskites, we obtain Tspiral values close to 400 K, comfortably far from room temperature and almost 100 K higher than using chemical disorder alone. Moreover, we reveal a linear relationship between the spiral's wave vector and the onset temperature of the spiral phase. This linear law ends at a paramagnetic-collinear-spiral triple point, which defines the highest spiral ordering temperature that can be achieved in this class of materials. On the basis of these findings, we propose a general set of rules for designing magnetic spirals in layered perovskites using external pressure, chemical substitutions, and/or epitaxial strain, which should guide future efforts to engineer magnetic spiral phases with ordering temperatures suitable for technological applications.

AB - In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electronic devices. Advances toward technological applications have been hindered, however, by the relatively low ordering temperatures Tspiral of most magnetic spiral phases, which rarely exceed 100 K. We have recently established that the ordering temperature of a magnetic spiral can be increased up to 310 K by the introduction of chemical disorder. Here, we explore the design space opened up by this novel mechanism by combining it with a targeted lattice control of some magnetic interactions. In Cu-Fe layered perovskites, we obtain Tspiral values close to 400 K, comfortably far from room temperature and almost 100 K higher than using chemical disorder alone. Moreover, we reveal a linear relationship between the spiral's wave vector and the onset temperature of the spiral phase. This linear law ends at a paramagnetic-collinear-spiral triple point, which defines the highest spiral ordering temperature that can be achieved in this class of materials. On the basis of these findings, we propose a general set of rules for designing magnetic spirals in layered perovskites using external pressure, chemical substitutions, and/or epitaxial strain, which should guide future efforts to engineer magnetic spiral phases with ordering temperatures suitable for technological applications.

U2 - 10.1126/sciadv.aau6386

DO - 10.1126/sciadv.aau6386

M3 - Journal article

VL - 4

JO - Science Advances

JF - Science Advances

SN - 2375-2548

IS - 10

M1 - aau6386

ER -

Shang T, Canévet E, Morin M, Sheptyakov D, Fernández-Díaz MT, Pomjakushina E et al. Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature. Science Advances. 2018;4(10). aau6386. https://doi.org/10.1126/sciadv.aau6386