Field-induced magnetic phases and electric polarization in LiNiPO4

Thomas Bagger Stibius Jensen; Niels Bech Christensen; M. Kenzelmann; H.M. Ronnow; C. Niedermayer; Niels Hessel Andersen; Kim Lefmann; J. Schefer; M. Von Zimmermann; J. Li; J.L. Zarestky; D. Vaknin

doi:10.1103/PhysRevB.79.092412

Field-induced magnetic phases and electric polarization in LiNiPO4

Thomas Bagger Stibius Jensen, Niels Bech Christensen, M. Kenzelmann, H.M. Ronnow, C. Niedermayer, Niels Hessel Andersen, Kim Lefmann, J. Schefer, M. Von Zimmermann, J. Li, J.L. Zarestky, D. Vaknin

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Abstract

Neutron diffraction is used to probe the (H,T) phase diagram of magnetoelectric (ME) LiNiPO4 for magnetic fields along the c axis. At zero field the Ni spins order in two antiferromagnetic phases. One has commensurate (C) structures and general ordering vectors k(C)=(0,0,0); the other one is incommensurate (IC) with k(IC)=(0,q,0). At low temperatures the C order collapses above mu H-0=12 T and adopts an IC structure with modulation vector parallel to k(IC). We show that C order is required for the ME effect and establish how electric polarization results from a field-induced reduction in the total magnetoelastic energy.

Original language	English
Journal	Physical Review B Condensed Matter
Volume	79
Issue number	9
Pages (from-to)	092412
ISSN	0163-1829
DOIs	https://doi.org/10.1103/PhysRevB.79.092412
Publication status	Published - 2009

Bibliographical note

Keywords

Materials characterization and modelling
Materials research
magnetic structure
nickel compounds
lithium compounds
magnetoelectric effects
antiferromagnetism
neutron diffraction
magnetoelastic effects
magnetic transitions

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title = "Field-induced magnetic phases and electric polarization in LiNiPO4",

abstract = "Neutron diffraction is used to probe the (H,T) phase diagram of magnetoelectric (ME) LiNiPO4 for magnetic fields along the c axis. At zero field the Ni spins order in two antiferromagnetic phases. One has commensurate (C) structures and general ordering vectors k(C)=(0,0,0); the other one is incommensurate (IC) with k(IC)=(0,q,0). At low temperatures the C order collapses above mu H-0=12 T and adopts an IC structure with modulation vector parallel to k(IC). We show that C order is required for the ME effect and establish how electric polarization results from a field-induced reduction in the total magnetoelastic energy.",

keywords = "Materials characterization and modelling, Materials research, magnetic structure, nickel compounds, lithium compounds, magnetoelectric effects, antiferromagnetism, neutron diffraction, magnetoelastic effects, magnetic transitions, Materialeforskning, Materialekarakterisering og materialemodellering",

author = "Jensen, {Thomas Bagger Stibius} and Christensen, {Niels Bech} and M. Kenzelmann and H.M. Ronnow and C. Niedermayer and Andersen, {Niels Hessel} and Kim Lefmann and J. Schefer and {Von Zimmermann}, M. and J. Li and J.L. Zarestky and D. Vaknin",

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doi = "10.1103/PhysRevB.79.092412",

language = "English",

volume = "79",

pages = "092412",

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TY - JOUR

T1 - Field-induced magnetic phases and electric polarization in LiNiPO4

AU - Jensen, Thomas Bagger Stibius

AU - Christensen, Niels Bech

AU - Kenzelmann, M.

AU - Ronnow, H.M.

AU - Niedermayer, C.

AU - Andersen, Niels Hessel

AU - Lefmann, Kim

AU - Schefer, J.

AU - Von Zimmermann, M.

AU - Li, J.

AU - Zarestky, J.L.

AU - Vaknin, D.

PY - 2009

Y1 - 2009

N2 - Neutron diffraction is used to probe the (H,T) phase diagram of magnetoelectric (ME) LiNiPO4 for magnetic fields along the c axis. At zero field the Ni spins order in two antiferromagnetic phases. One has commensurate (C) structures and general ordering vectors k(C)=(0,0,0); the other one is incommensurate (IC) with k(IC)=(0,q,0). At low temperatures the C order collapses above mu H-0=12 T and adopts an IC structure with modulation vector parallel to k(IC). We show that C order is required for the ME effect and establish how electric polarization results from a field-induced reduction in the total magnetoelastic energy.

AB - Neutron diffraction is used to probe the (H,T) phase diagram of magnetoelectric (ME) LiNiPO4 for magnetic fields along the c axis. At zero field the Ni spins order in two antiferromagnetic phases. One has commensurate (C) structures and general ordering vectors k(C)=(0,0,0); the other one is incommensurate (IC) with k(IC)=(0,q,0). At low temperatures the C order collapses above mu H-0=12 T and adopts an IC structure with modulation vector parallel to k(IC). We show that C order is required for the ME effect and establish how electric polarization results from a field-induced reduction in the total magnetoelastic energy.

KW - Materials characterization and modelling

KW - Materials research

KW - magnetic structure

KW - nickel compounds

KW - lithium compounds

KW - magnetoelectric effects

KW - antiferromagnetism

KW - neutron diffraction

KW - magnetoelastic effects

KW - magnetic transitions

KW - Materialeforskning

KW - Materialekarakterisering og materialemodellering

U2 - 10.1103/PhysRevB.79.092412

DO - 10.1103/PhysRevB.79.092412

M3 - Journal article

SN - 0163-1829

VL - 79

SP - 092412

JO - Physical Review B Condensed Matter

JF - Physical Review B Condensed Matter

IS - 9

ER -

Field-induced magnetic phases and electric polarization in LiNiPO4

Abstract

Bibliographical note

Keywords

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