Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]

X. M. Ren; S. Nishihara; T. Akutagawa; S. Noro; T. Nakamura; W. Fujita; K. Awaga

doi:10.1016/j.cplett.2007.03.083

Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)₂]

X. M. Ren, S. Nishihara, T. Akutagawa, S. Noro, T. Nakamura, W. Fujita, K. Awaga

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

6 Citations (Scopus)

Abstract

Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)₂] (RBzPy⁺ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt^2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at T_c ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)₂]^- anions and thus leading to enhancements of antiferromagnetic interactions.

Original language	English
Pages (from-to)	318-322
Number of pages	5
Journal	Chemical Physics Letters
Volume	439
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2007.03.083
Publication status	Published - 2007 May 11
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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@article{f0f9dac4b63f48e3b7e411ada16ef3e5,

title = "Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]",

abstract = "Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.",

author = "Ren, {X. M.} and S. Nishihara and T. Akutagawa and S. Noro and T. Nakamura and W. Fujita and K. Awaga",

year = "2007",

month = may,

day = "11",

doi = "10.1016/j.cplett.2007.03.083",

language = "English",

volume = "439",

pages = "318--322",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "4-6",

}

TY - JOUR

T1 - Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]

AU - Ren, X. M.

AU - Nishihara, S.

AU - Akutagawa, T.

AU - Noro, S.

AU - Nakamura, T.

AU - Fujita, W.

AU - Awaga, K.

PY - 2007/5/11

Y1 - 2007/5/11

N2 - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.

AB - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.

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JF - Chemical Physics Letters

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