Magnetic anisotropy in an oxo-centered {Mn3O}-type spin triangle

Z. H. Jang; K. H. Han; B. J. Suh; D. Ii; D. Y. Jung; K. Y. Choi; H. Nojiri

doi:10.3938/jkps.50.464

Magnetic anisotropy in an oxo-centered {Mn₃O}-type spin triangle

Z. H. Jang, K. H. Han, B. J. Suh, D. Ii, D. Y. Jung, K. Y. Choi, H. Nojiri

Institute for Materials Research (IMR) (institute affiliation only)

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We report the results of experimental and theoretical studies on the magnetic properties of one of the trinuclear oxo-centered Mn complexes, Mn ₃O-(1) (Compound 1 in Ref. [1]), where three identical Mn ³⁺(S = 2) ions form a nearly equilateral triangle. The magnetic susceptibility χ measured using a SQUID magnetometer from room temperature down to 1.8 K shows a typical behavior for an antiferromagnetic (AFM) spin ring with a ground spin state S_T = 0, whereby _χT decreases gradually as temperature decreases. A stepwise magnetization with very broad steps centered at H ≈ 13 T and H ≥ 32 T is observed in a pulsed-field magnet experiment up to 33 T at T = 1.7 K. From a numerical calculation using a model Hamiltonian, we find that the magnetic properties of the subject compound are well characterized by isosceles-type AFM exchange constants, J ≡ J₁₂ = J₁₃ = -31.7 K and J′ ≡ J₂₃ = -35.9 K, and by a single ion anisotropy, D = 11.1 K.

Original language	English
Pages (from-to)	464-469
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	50
Issue number	2
DOIs	https://doi.org/10.3938/jkps.50.464
Publication status	Published - 2007 Feb

Keywords

Heisenberg spin triangle
High-field pulsed magnet
Level crossing
Single ion anisotropy
Single molecular magnet

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.3938/jkps.50.464

Cite this

@article{e323a51156cc48928ec11adba8cdc390,

title = "Magnetic anisotropy in an oxo-centered {Mn3O}-type spin triangle",

abstract = "We report the results of experimental and theoretical studies on the magnetic properties of one of the trinuclear oxo-centered Mn complexes, Mn 3O-(1) (Compound 1 in Ref. [1]), where three identical Mn 3+(S = 2) ions form a nearly equilateral triangle. The magnetic susceptibility χ measured using a SQUID magnetometer from room temperature down to 1.8 K shows a typical behavior for an antiferromagnetic (AFM) spin ring with a ground spin state ST = 0, whereby χT decreases gradually as temperature decreases. A stepwise magnetization with very broad steps centered at H ≈ 13 T and H ≥ 32 T is observed in a pulsed-field magnet experiment up to 33 T at T = 1.7 K. From a numerical calculation using a model Hamiltonian, we find that the magnetic properties of the subject compound are well characterized by isosceles-type AFM exchange constants, J ≡ J12 = J13 = -31.7 K and J′ ≡ J23 = -35.9 K, and by a single ion anisotropy, D = 11.1 K.",

keywords = "Heisenberg spin triangle, High-field pulsed magnet, Level crossing, Single ion anisotropy, Single molecular magnet",

author = "Jang, {Z. H.} and Han, {K. H.} and Suh, {B. J.} and D. Ii and Jung, {D. Y.} and Choi, {K. Y.} and H. Nojiri",

year = "2007",

month = feb,

doi = "10.3938/jkps.50.464",

language = "English",

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journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - Magnetic anisotropy in an oxo-centered {Mn3O}-type spin triangle

AU - Jang, Z. H.

AU - Han, K. H.

AU - Suh, B. J.

AU - Ii, D.

AU - Jung, D. Y.

AU - Choi, K. Y.

AU - Nojiri, H.

PY - 2007/2

Y1 - 2007/2

N2 - We report the results of experimental and theoretical studies on the magnetic properties of one of the trinuclear oxo-centered Mn complexes, Mn 3O-(1) (Compound 1 in Ref. [1]), where three identical Mn 3+(S = 2) ions form a nearly equilateral triangle. The magnetic susceptibility χ measured using a SQUID magnetometer from room temperature down to 1.8 K shows a typical behavior for an antiferromagnetic (AFM) spin ring with a ground spin state ST = 0, whereby χT decreases gradually as temperature decreases. A stepwise magnetization with very broad steps centered at H ≈ 13 T and H ≥ 32 T is observed in a pulsed-field magnet experiment up to 33 T at T = 1.7 K. From a numerical calculation using a model Hamiltonian, we find that the magnetic properties of the subject compound are well characterized by isosceles-type AFM exchange constants, J ≡ J12 = J13 = -31.7 K and J′ ≡ J23 = -35.9 K, and by a single ion anisotropy, D = 11.1 K.

AB - We report the results of experimental and theoretical studies on the magnetic properties of one of the trinuclear oxo-centered Mn complexes, Mn 3O-(1) (Compound 1 in Ref. [1]), where three identical Mn 3+(S = 2) ions form a nearly equilateral triangle. The magnetic susceptibility χ measured using a SQUID magnetometer from room temperature down to 1.8 K shows a typical behavior for an antiferromagnetic (AFM) spin ring with a ground spin state ST = 0, whereby χT decreases gradually as temperature decreases. A stepwise magnetization with very broad steps centered at H ≈ 13 T and H ≥ 32 T is observed in a pulsed-field magnet experiment up to 33 T at T = 1.7 K. From a numerical calculation using a model Hamiltonian, we find that the magnetic properties of the subject compound are well characterized by isosceles-type AFM exchange constants, J ≡ J12 = J13 = -31.7 K and J′ ≡ J23 = -35.9 K, and by a single ion anisotropy, D = 11.1 K.

KW - Heisenberg spin triangle

KW - High-field pulsed magnet

KW - Level crossing

KW - Single ion anisotropy

KW - Single molecular magnet

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