FT pulsed ESR/electron spin transient nutation spectroscopy in the study of molecular based magnetism: Applications to high-spin polymers and ferromagnetic materials

Takeji Takui, Kazunobu Sato, Daisuke Shiomi, Koichi Itoh, Takashi Kaneko, Eishun Tsuchida, Hiroyuki Nishide

研究成果: Article

5 引用 (Scopus)

抄録

Recently, organic high-spin polymers and clusters have been emerging. With the increasing effective molecular spin quantum number S and molecular weight of the polymers, however, cw ESR spectroscopy manifests its inherent disadvantages in discriminating high spins from S = 1/2 and in determining the S's for the complex mixture of various spin assemblages. An electron spin transient nutation method based on pulsed ESR spectroscopy has been for the first time applied to a quasi 1D high-spin polymer as one of the most complex amorphous spin assemblages, identifying that the polymer is comprised of high-spin assemblages with the S's greater than two. It can be concluded that electron spin transient nutation spectroscopy is a facile and useful method for the exclusive identification of S and ESR transitions even for the cases of apparently vanishing fine-structure splittings and for spin systems with residual fine-structure terms in the spin Hamiltonian. Fundamental bases for the transient nutation method are described, emphasizing inherent advantages in the nutation spectroscopy from the methodological viewpoint. The salient features of multiple-quantum nutations have been disclosed in this work.

元の言語English
ページ(範囲)191-212
ページ数22
ジャーナルMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
271
出版物ステータスPublished - 1995

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nutation
Ferromagnetic materials
ferromagnetic materials
Magnetism
electron spin
Paramagnetic resonance
Polymers
Spectroscopy
Electrons
polymers
spectroscopy
Hamiltonians
Complex Mixtures
Molecular weight
fine structure
quantum numbers
emerging
molecular weight

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

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title = "FT pulsed ESR/electron spin transient nutation spectroscopy in the study of molecular based magnetism: Applications to high-spin polymers and ferromagnetic materials",
abstract = "Recently, organic high-spin polymers and clusters have been emerging. With the increasing effective molecular spin quantum number S and molecular weight of the polymers, however, cw ESR spectroscopy manifests its inherent disadvantages in discriminating high spins from S = 1/2 and in determining the S's for the complex mixture of various spin assemblages. An electron spin transient nutation method based on pulsed ESR spectroscopy has been for the first time applied to a quasi 1D high-spin polymer as one of the most complex amorphous spin assemblages, identifying that the polymer is comprised of high-spin assemblages with the S's greater than two. It can be concluded that electron spin transient nutation spectroscopy is a facile and useful method for the exclusive identification of S and ESR transitions even for the cases of apparently vanishing fine-structure splittings and for spin systems with residual fine-structure terms in the spin Hamiltonian. Fundamental bases for the transient nutation method are described, emphasizing inherent advantages in the nutation spectroscopy from the methodological viewpoint. The salient features of multiple-quantum nutations have been disclosed in this work.",
author = "Takeji Takui and Kazunobu Sato and Daisuke Shiomi and Koichi Itoh and Takashi Kaneko and Eishun Tsuchida and Hiroyuki Nishide",
year = "1995",
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T1 - FT pulsed ESR/electron spin transient nutation spectroscopy in the study of molecular based magnetism

T2 - Applications to high-spin polymers and ferromagnetic materials

AU - Takui, Takeji

AU - Sato, Kazunobu

AU - Shiomi, Daisuke

AU - Itoh, Koichi

AU - Kaneko, Takashi

AU - Tsuchida, Eishun

AU - Nishide, Hiroyuki

PY - 1995

Y1 - 1995

N2 - Recently, organic high-spin polymers and clusters have been emerging. With the increasing effective molecular spin quantum number S and molecular weight of the polymers, however, cw ESR spectroscopy manifests its inherent disadvantages in discriminating high spins from S = 1/2 and in determining the S's for the complex mixture of various spin assemblages. An electron spin transient nutation method based on pulsed ESR spectroscopy has been for the first time applied to a quasi 1D high-spin polymer as one of the most complex amorphous spin assemblages, identifying that the polymer is comprised of high-spin assemblages with the S's greater than two. It can be concluded that electron spin transient nutation spectroscopy is a facile and useful method for the exclusive identification of S and ESR transitions even for the cases of apparently vanishing fine-structure splittings and for spin systems with residual fine-structure terms in the spin Hamiltonian. Fundamental bases for the transient nutation method are described, emphasizing inherent advantages in the nutation spectroscopy from the methodological viewpoint. The salient features of multiple-quantum nutations have been disclosed in this work.

AB - Recently, organic high-spin polymers and clusters have been emerging. With the increasing effective molecular spin quantum number S and molecular weight of the polymers, however, cw ESR spectroscopy manifests its inherent disadvantages in discriminating high spins from S = 1/2 and in determining the S's for the complex mixture of various spin assemblages. An electron spin transient nutation method based on pulsed ESR spectroscopy has been for the first time applied to a quasi 1D high-spin polymer as one of the most complex amorphous spin assemblages, identifying that the polymer is comprised of high-spin assemblages with the S's greater than two. It can be concluded that electron spin transient nutation spectroscopy is a facile and useful method for the exclusive identification of S and ESR transitions even for the cases of apparently vanishing fine-structure splittings and for spin systems with residual fine-structure terms in the spin Hamiltonian. Fundamental bases for the transient nutation method are described, emphasizing inherent advantages in the nutation spectroscopy from the methodological viewpoint. The salient features of multiple-quantum nutations have been disclosed in this work.

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