Switching of Slow Magnetic Relaxation Dynamics in Mononuclear Dysprosium(III) Compounds with Charge Density

Kwang Soo Lim; José J. Baldoví; Woo Ram Lee; Jeong Hwa Song; Sung Won Yoon; Byoung Jin Suh; Eugenio Coronado; Alejandro Gaita-Ariño; Chang Seop Hong

doi:10.1021/acs.inorgchem.6b00410

Switching of Slow Magnetic Relaxation Dynamics in Mononuclear Dysprosium(III) Compounds with Charge Density

Kwang Soo Lim, José J. Baldoví, Woo Ram Lee, Jeong Hwa Song, Sung Won Yoon, Byoung Jin Suh, Eugenio Coronado, Alejandro Gaita-Ariño, Chang Seop Hong

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

19 Citations (Scopus)

Abstract

The symmetry around a Dy ion is recognized to be a crucial parameter dictating magnetization relaxation dynamics. We prepared two similar square-antiprismatic complexes, [Dy(L_OMe)₂(H₂O)₂](PF₆) (1) and Dy(L_OMe)₂(NO₃) (2), where L_OMe = [CpCo{P(O)(O(CH₃))₂}₃], including either two neutral water molecules (1) or an anionic nitrate ligand (2). We demonstrated that in this case relaxation dynamics is dramatically affected by the introduction of a charged ligand, stabilizing the easy axis of magnetization along the nitrate direction. We also showed that the application of either a direct-current field or chemical dilution effectively stops quantum tunneling in the ground state of 2, thereby increasing the relaxation time by over 3 orders of magnitude at 3.5 K.

Original language	English
Pages (from-to)	5398-5404
Number of pages	7
Journal	Inorganic Chemistry
Volume	55
Issue number	11
DOIs	https://doi.org/10.1021/acs.inorgchem.6b00410
Publication status	Published - 2016 Jun 6

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Publisher Copyright:
© 2016 American Chemical Society.

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/acs.inorgchem.6b00410

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title = "Switching of Slow Magnetic Relaxation Dynamics in Mononuclear Dysprosium(III) Compounds with Charge Density",

abstract = "The symmetry around a Dy ion is recognized to be a crucial parameter dictating magnetization relaxation dynamics. We prepared two similar square-antiprismatic complexes, [Dy(LOMe)2(H2O)2](PF6) (1) and Dy(LOMe)2(NO3) (2), where LOMe = [CpCo{P(O)(O(CH3))2}3], including either two neutral water molecules (1) or an anionic nitrate ligand (2). We demonstrated that in this case relaxation dynamics is dramatically affected by the introduction of a charged ligand, stabilizing the easy axis of magnetization along the nitrate direction. We also showed that the application of either a direct-current field or chemical dilution effectively stops quantum tunneling in the ground state of 2, thereby increasing the relaxation time by over 3 orders of magnitude at 3.5 K.",

author = "Lim, {Kwang Soo} and Baldov{\'i}, {Jos{\'e} J.} and Lee, {Woo Ram} and Song, {Jeong Hwa} and Yoon, {Sung Won} and Suh, {Byoung Jin} and Eugenio Coronado and Alejandro Gaita-Ari{\~n}o and Hong, {Chang Seop}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = jun,

day = "6",

doi = "10.1021/acs.inorgchem.6b00410",

language = "English",

volume = "55",

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journal = "Inorganic Chemistry",

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T1 - Switching of Slow Magnetic Relaxation Dynamics in Mononuclear Dysprosium(III) Compounds with Charge Density

AU - Lim, Kwang Soo

AU - Baldoví, José J.

AU - Lee, Woo Ram

AU - Song, Jeong Hwa

AU - Yoon, Sung Won

AU - Suh, Byoung Jin

AU - Coronado, Eugenio

AU - Gaita-Ariño, Alejandro

AU - Hong, Chang Seop

PY - 2016/6/6

Y1 - 2016/6/6

N2 - The symmetry around a Dy ion is recognized to be a crucial parameter dictating magnetization relaxation dynamics. We prepared two similar square-antiprismatic complexes, [Dy(LOMe)2(H2O)2](PF6) (1) and Dy(LOMe)2(NO3) (2), where LOMe = [CpCo{P(O)(O(CH3))2}3], including either two neutral water molecules (1) or an anionic nitrate ligand (2). We demonstrated that in this case relaxation dynamics is dramatically affected by the introduction of a charged ligand, stabilizing the easy axis of magnetization along the nitrate direction. We also showed that the application of either a direct-current field or chemical dilution effectively stops quantum tunneling in the ground state of 2, thereby increasing the relaxation time by over 3 orders of magnitude at 3.5 K.

AB - The symmetry around a Dy ion is recognized to be a crucial parameter dictating magnetization relaxation dynamics. We prepared two similar square-antiprismatic complexes, [Dy(LOMe)2(H2O)2](PF6) (1) and Dy(LOMe)2(NO3) (2), where LOMe = [CpCo{P(O)(O(CH3))2}3], including either two neutral water molecules (1) or an anionic nitrate ligand (2). We demonstrated that in this case relaxation dynamics is dramatically affected by the introduction of a charged ligand, stabilizing the easy axis of magnetization along the nitrate direction. We also showed that the application of either a direct-current field or chemical dilution effectively stops quantum tunneling in the ground state of 2, thereby increasing the relaxation time by over 3 orders of magnitude at 3.5 K.

UR - http://www.scopus.com/inward/record.url?scp=84973343763&partnerID=8YFLogxK

U2 - 10.1021/acs.inorgchem.6b00410

DO - 10.1021/acs.inorgchem.6b00410

M3 - Article

AN - SCOPUS:84973343763

SN - 0020-1669

VL - 55

SP - 5398

EP - 5404

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 11

ER -

Switching of Slow Magnetic Relaxation Dynamics in Mononuclear Dysprosium(III) Compounds with Charge Density

Abstract

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