Crystal structure and magnetic properties of the verdazyl biradical m-Ph-V2 forming a ferromagnetic alternating double chain

Kenji Iwase; Hironori Yamaguchi; Toshio Ono; Tokuro Shimokawa; Hiroki Nakano; Akira Matsuo; Koichi Kindo; Hiroyuki Nojiri; Yuko Hosokoshi

doi:10.7566/JPSJ.82.074719

Crystal structure and magnetic properties of the verdazyl biradical m-Ph-V₂ forming a ferromagnetic alternating double chain

Kenji Iwase, Hironori Yamaguchi, Toshio Ono, Tokuro Shimokawa, Hiroki Nakano, Akira Matsuo, Koichi Kindo, Hiroyuki Nojiri, Yuko Hosokoshi

Institute for Materials Research (IMR)

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

16 Citations (Scopus)

Abstract

We have succeeded in synthesizing organic biradical crystals of m-Ph-V ₂ [= 1,3-bis-(1,5-diphenylverdazyl-3- yl)benzene]. The intra and intermolecular interactions, which are deduced from the molecular packing in the crystal, are considered to form an alternating double chain. We evaluated the intramolecular ferromagnetic (FM) interaction from an analysis of the magnetic susceptibility of isolated m-Ph-V₂ molecules. We analyzed the magnetic susceptibility and magnetization curves of the crystals by the quantum Monte Carlo method and successfully explained these properties using an S = 1=2 FM alternating double chain model, which consists of antiferromagnetically coupled FM alternating chains. In addition, the magnetic susceptibility and specific heat showed anomalous behavior at T_N = 1.9 K, which indicates the magnetic phase transition to an antiferromagnetically ordered state.

Original language	English
Article number	074719
Journal	journal of the physical society of japan
Volume	82
Issue number	7
DOIs	https://doi.org/10.7566/JPSJ.82.074719
Publication status	Published - 2013 Jul

Keywords

Double chain
Magnetic properties
Organic radical
Verdazyl radical

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.7566/JPSJ.82.074719

Cite this

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title = "Crystal structure and magnetic properties of the verdazyl biradical m-Ph-V2 forming a ferromagnetic alternating double chain",

abstract = "We have succeeded in synthesizing organic biradical crystals of m-Ph-V 2 [= 1,3-bis-(1,5-diphenylverdazyl-3- yl)benzene]. The intra and intermolecular interactions, which are deduced from the molecular packing in the crystal, are considered to form an alternating double chain. We evaluated the intramolecular ferromagnetic (FM) interaction from an analysis of the magnetic susceptibility of isolated m-Ph-V2 molecules. We analyzed the magnetic susceptibility and magnetization curves of the crystals by the quantum Monte Carlo method and successfully explained these properties using an S = 1=2 FM alternating double chain model, which consists of antiferromagnetically coupled FM alternating chains. In addition, the magnetic susceptibility and specific heat showed anomalous behavior at TN = 1.9 K, which indicates the magnetic phase transition to an antiferromagnetically ordered state.",

keywords = "Double chain, Magnetic properties, Organic radical, Verdazyl radical",

author = "Kenji Iwase and Hironori Yamaguchi and Toshio Ono and Tokuro Shimokawa and Hiroki Nakano and Akira Matsuo and Koichi Kindo and Hiroyuki Nojiri and Yuko Hosokoshi",

year = "2013",

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language = "English",

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journal = "Journal of the Physical Society of Japan",

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T1 - Crystal structure and magnetic properties of the verdazyl biradical m-Ph-V2 forming a ferromagnetic alternating double chain

AU - Iwase, Kenji

AU - Yamaguchi, Hironori

AU - Ono, Toshio

AU - Shimokawa, Tokuro

AU - Nakano, Hiroki

AU - Matsuo, Akira

AU - Kindo, Koichi

AU - Nojiri, Hiroyuki

AU - Hosokoshi, Yuko

PY - 2013/7

Y1 - 2013/7

N2 - We have succeeded in synthesizing organic biradical crystals of m-Ph-V 2 [= 1,3-bis-(1,5-diphenylverdazyl-3- yl)benzene]. The intra and intermolecular interactions, which are deduced from the molecular packing in the crystal, are considered to form an alternating double chain. We evaluated the intramolecular ferromagnetic (FM) interaction from an analysis of the magnetic susceptibility of isolated m-Ph-V2 molecules. We analyzed the magnetic susceptibility and magnetization curves of the crystals by the quantum Monte Carlo method and successfully explained these properties using an S = 1=2 FM alternating double chain model, which consists of antiferromagnetically coupled FM alternating chains. In addition, the magnetic susceptibility and specific heat showed anomalous behavior at TN = 1.9 K, which indicates the magnetic phase transition to an antiferromagnetically ordered state.

AB - We have succeeded in synthesizing organic biradical crystals of m-Ph-V 2 [= 1,3-bis-(1,5-diphenylverdazyl-3- yl)benzene]. The intra and intermolecular interactions, which are deduced from the molecular packing in the crystal, are considered to form an alternating double chain. We evaluated the intramolecular ferromagnetic (FM) interaction from an analysis of the magnetic susceptibility of isolated m-Ph-V2 molecules. We analyzed the magnetic susceptibility and magnetization curves of the crystals by the quantum Monte Carlo method and successfully explained these properties using an S = 1=2 FM alternating double chain model, which consists of antiferromagnetically coupled FM alternating chains. In addition, the magnetic susceptibility and specific heat showed anomalous behavior at TN = 1.9 K, which indicates the magnetic phase transition to an antiferromagnetically ordered state.

KW - Double chain

KW - Magnetic properties

KW - Organic radical

KW - Verdazyl radical

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