Hysteresis loops in an oxo-centered {Mn3O}-type spin triangle probed with a pulsed field

J. N. Park; B. J. Suh; K. Y. Choi; H. Nojiri; Z. H. Jang

doi:10.3938/jkps.59.317

Hysteresis loops in an oxo-centered {Mn₃O}-type spin triangle probed with a pulsed field

J. N. Park
, B. J. Suh
, K. Y. Choi
, H. Nojiri
, Z. H. Jang

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

Abstract

We have investigated the energy gap responsible for the quantum transition by measuring the magnetization of a trinuclear oxo-centered Mn complex, [Mn₃O(O₂CPh)₆(pyr)₂(H₂O)]·0.5 MeCN. The equilibrium magnetization was measured with a superconducting quantum interference device (SQUID) magnetometer and was analyzed with an irreducible tensor operator (ITO) technique to obtain the magnetic exchange and the anisotropy constants. The unusual magnetization steps observed at B ≈ 0 in the hysteresis from pulsed magnet experiments were successfully reproduced with a numerical simulation based on a Bloch-type equation including a Landau-Zener-Sẗuckelberg (LZS) transition term for which the energy gap is field dependent and Δ0 = 2.0 mK at B = 0.

Original language	English
Pages (from-to)	317-321
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	59
Issue number	2
DOIs	https://doi.org/10.3938/jkps.59.317
State	Published - 12 Aug 2011
Externally published	Yes

Keywords

High-field pulsed magnet
Landau-Zener-Sẗuckelberg transition
Level crossing
Single molecular magnet

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10.3938/jkps.59.317

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title = "Hysteresis loops in an oxo-centered \{Mn3O\}-type spin triangle probed with a pulsed field",

abstract = "We have investigated the energy gap responsible for the quantum transition by measuring the magnetization of a trinuclear oxo-centered Mn complex, [Mn3O(O2CPh)6(pyr)2(H2O)]·0.5 MeCN. The equilibrium magnetization was measured with a superconducting quantum interference device (SQUID) magnetometer and was analyzed with an irreducible tensor operator (ITO) technique to obtain the magnetic exchange and the anisotropy constants. The unusual magnetization steps observed at B ≈ 0 in the hysteresis from pulsed magnet experiments were successfully reproduced with a numerical simulation based on a Bloch-type equation including a Landau-Zener-Sẗuckelberg (LZS) transition term for which the energy gap is field dependent and Δ0 = 2.0 mK at B = 0.",

keywords = "High-field pulsed magnet, Landau-Zener-Sẗuckelberg transition, Level crossing, Single molecular magnet",

author = "Park, \{J. N.\} and Suh, \{B. J.\} and Choi, \{K. Y.\} and H. Nojiri and Jang, \{Z. H.\}",

year = "2011",

month = aug,

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doi = "10.3938/jkps.59.317",

language = "English",

volume = "59",

pages = "317--321",

journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - Hysteresis loops in an oxo-centered {Mn3O}-type spin triangle probed with a pulsed field

AU - Park, J. N.

AU - Suh, B. J.

AU - Choi, K. Y.

AU - Nojiri, H.

AU - Jang, Z. H.

PY - 2011/8/12

Y1 - 2011/8/12

N2 - We have investigated the energy gap responsible for the quantum transition by measuring the magnetization of a trinuclear oxo-centered Mn complex, [Mn3O(O2CPh)6(pyr)2(H2O)]·0.5 MeCN. The equilibrium magnetization was measured with a superconducting quantum interference device (SQUID) magnetometer and was analyzed with an irreducible tensor operator (ITO) technique to obtain the magnetic exchange and the anisotropy constants. The unusual magnetization steps observed at B ≈ 0 in the hysteresis from pulsed magnet experiments were successfully reproduced with a numerical simulation based on a Bloch-type equation including a Landau-Zener-Sẗuckelberg (LZS) transition term for which the energy gap is field dependent and Δ0 = 2.0 mK at B = 0.

AB - We have investigated the energy gap responsible for the quantum transition by measuring the magnetization of a trinuclear oxo-centered Mn complex, [Mn3O(O2CPh)6(pyr)2(H2O)]·0.5 MeCN. The equilibrium magnetization was measured with a superconducting quantum interference device (SQUID) magnetometer and was analyzed with an irreducible tensor operator (ITO) technique to obtain the magnetic exchange and the anisotropy constants. The unusual magnetization steps observed at B ≈ 0 in the hysteresis from pulsed magnet experiments were successfully reproduced with a numerical simulation based on a Bloch-type equation including a Landau-Zener-Sẗuckelberg (LZS) transition term for which the energy gap is field dependent and Δ0 = 2.0 mK at B = 0.

KW - High-field pulsed magnet

KW - Landau-Zener-Sẗuckelberg transition

KW - Level crossing

KW - Single molecular magnet

UR - https://www.scopus.com/pages/publications/79961237695

U2 - 10.3938/jkps.59.317

DO - 10.3938/jkps.59.317

M3 - Article

AN - SCOPUS:79961237695

SN - 0374-4884

VL - 59

SP - 317

EP - 321

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 2

ER -

Hysteresis loops in an oxo-centered {Mn₃O}-type spin triangle probed with a pulsed field

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