ESR Detection of Induced Spin Moments in Halogen-Bridged Mixed-Metal Complexes Ni1-xPdx(chxn)2Br3

Hisaaki Tanaka; Kazuhiro Marumoto; Shin Ichi Kuroda; Toshio Manabe; Masahiro Yamashita

doi:10.1143/JPSJ.71.1370

ESR Detection of Induced Spin Moments in Halogen-Bridged Mixed-Metal Complexes Ni_1-xPd_x(chxn)₂Br₃

Hisaaki Tanaka, Kazuhiro Marumoto, Shin Ichi Kuroda, Toshio Manabe, Masahiro Yamashita

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

10 Citations (Scopus)

Abstract

ESR measurements have been performed on single crystals of the quasi-one-dimensional halogen-bridged mixed-metal complexes Ni _1-xPd_x(chxn)₂Br₃, where on-site Coulomb interaction (Ni³⁺ case) and electron-phonon interaction (Pd²⁺-Pd⁴⁺ case) are competing with each other. Monotonic decrease of principal g-values from g_max^Ni = 2.188 to g_max^Pd = 2.133 was observed as x increases. This indicates that the magnetic Pd³⁺ ions with smaller g-value than that of Ni³⁺ are induced from non-magnetic Pd²⁺-Pd ⁴⁺ chain, which is consistent with the previously observed spin susceptibility enhancement in this system. In addition, monotonic decrease of the ESR linewidth is observed as x increases indicating the contribution of Pd³⁺ ions with longer spin-lattice relaxation time T_ID, which is supported by using isomorphic chlorine complexes Ni(chxn) ₂Cl₃ and Pd(chxn)₂Cl₃.

Original language	English
Pages (from-to)	1370-1375
Number of pages	6
Journal	journal of the physical society of japan
Volume	71
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.71.1370
Publication status	Published - 2002 May
Externally published	Yes

Keywords

CDW
ESR
MX chain
SDW
Single crystal
Spin-lattice relaxation time

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.71.1370

Cite this

@article{bf87e86a7675449b9c24b2eddf02097c,

title = "ESR Detection of Induced Spin Moments in Halogen-Bridged Mixed-Metal Complexes Ni1-xPdx(chxn)2Br3",

abstract = "ESR measurements have been performed on single crystals of the quasi-one-dimensional halogen-bridged mixed-metal complexes Ni 1-xPdx(chxn)2Br3, where on-site Coulomb interaction (Ni3+ case) and electron-phonon interaction (Pd2+-Pd4+ case) are competing with each other. Monotonic decrease of principal g-values from gmaxNi = 2.188 to gmaxPd = 2.133 was observed as x increases. This indicates that the magnetic Pd3+ ions with smaller g-value than that of Ni3+ are induced from non-magnetic Pd2+-Pd 4+ chain, which is consistent with the previously observed spin susceptibility enhancement in this system. In addition, monotonic decrease of the ESR linewidth is observed as x increases indicating the contribution of Pd3+ ions with longer spin-lattice relaxation time TID, which is supported by using isomorphic chlorine complexes Ni(chxn) 2Cl3 and Pd(chxn)2Cl3.",

keywords = "CDW, ESR, MX chain, SDW, Single crystal, Spin-lattice relaxation time",

author = "Hisaaki Tanaka and Kazuhiro Marumoto and Kuroda, {Shin Ichi} and Toshio Manabe and Masahiro Yamashita",

year = "2002",

month = may,

doi = "10.1143/JPSJ.71.1370",

language = "English",

volume = "71",

pages = "1370--1375",

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

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "5",

}

TY - JOUR

T1 - ESR Detection of Induced Spin Moments in Halogen-Bridged Mixed-Metal Complexes Ni1-xPdx(chxn)2Br3

AU - Tanaka, Hisaaki

AU - Marumoto, Kazuhiro

AU - Kuroda, Shin Ichi

AU - Manabe, Toshio

AU - Yamashita, Masahiro

PY - 2002/5

Y1 - 2002/5

N2 - ESR measurements have been performed on single crystals of the quasi-one-dimensional halogen-bridged mixed-metal complexes Ni 1-xPdx(chxn)2Br3, where on-site Coulomb interaction (Ni3+ case) and electron-phonon interaction (Pd2+-Pd4+ case) are competing with each other. Monotonic decrease of principal g-values from gmaxNi = 2.188 to gmaxPd = 2.133 was observed as x increases. This indicates that the magnetic Pd3+ ions with smaller g-value than that of Ni3+ are induced from non-magnetic Pd2+-Pd 4+ chain, which is consistent with the previously observed spin susceptibility enhancement in this system. In addition, monotonic decrease of the ESR linewidth is observed as x increases indicating the contribution of Pd3+ ions with longer spin-lattice relaxation time TID, which is supported by using isomorphic chlorine complexes Ni(chxn) 2Cl3 and Pd(chxn)2Cl3.

AB - ESR measurements have been performed on single crystals of the quasi-one-dimensional halogen-bridged mixed-metal complexes Ni 1-xPdx(chxn)2Br3, where on-site Coulomb interaction (Ni3+ case) and electron-phonon interaction (Pd2+-Pd4+ case) are competing with each other. Monotonic decrease of principal g-values from gmaxNi = 2.188 to gmaxPd = 2.133 was observed as x increases. This indicates that the magnetic Pd3+ ions with smaller g-value than that of Ni3+ are induced from non-magnetic Pd2+-Pd 4+ chain, which is consistent with the previously observed spin susceptibility enhancement in this system. In addition, monotonic decrease of the ESR linewidth is observed as x increases indicating the contribution of Pd3+ ions with longer spin-lattice relaxation time TID, which is supported by using isomorphic chlorine complexes Ni(chxn) 2Cl3 and Pd(chxn)2Cl3.

KW - CDW

KW - ESR

KW - MX chain

KW - SDW

KW - Single crystal

KW - Spin-lattice relaxation time

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