Enhancement of the coercivity in Co-Ni layered double hydroxides by increasing basal spacing

Cuijuan Zhang, Tomoya Tsuboi, Hiroaki Namba, Yasuaki Einaga, Takashi Yamamoto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The magnetic properties of layered double hydroxides (LDH) containing transition metal ions can still develop, compared with layered metal hydroxide salts which exhibit structure-dependent magnetism. In this article, we report the preparation of a hybrid magnet composed of Co-Ni LDH and n-alkylsulfonate anions (Co-Ni-CnSO3 LDH). As Co-Ni LDH is anion-exchangeable, we can systematically control the interlayer spacing by intercalating n-alkylsulfonates with different carbon numbers. The magnetic properties were examined with temperature- and field-dependent magnetization measurements. As a result, we have revealed that the coercive field depends on the basal spacing. It is suggested that increasing the basal spacing varies the competition between the in-plane superexchange interactions and long-range out-of-plane dipolar interactions. Moreover, a jump in the coercive field at around 20 Å of the basal spacing is assumed to be the modification of the magnetic ordering in Co-Ni-CnSO3 LDH.

Original languageEnglish
Pages (from-to)13324-13331
Number of pages8
JournalDalton Transactions
Volume45
Issue number34
DOIs
Publication statusPublished - 2016

Fingerprint

Hydroxides
Coercive force
Anions
Magnetization
Magnetic properties
Magnetism
Transition metals
Magnets
Metal ions
Carbon
Salts
Metals

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Enhancement of the coercivity in Co-Ni layered double hydroxides by increasing basal spacing. / Zhang, Cuijuan; Tsuboi, Tomoya; Namba, Hiroaki; Einaga, Yasuaki; Yamamoto, Takashi.

In: Dalton Transactions, Vol. 45, No. 34, 2016, p. 13324-13331.

Research output: Contribution to journalArticle

Zhang, Cuijuan ; Tsuboi, Tomoya ; Namba, Hiroaki ; Einaga, Yasuaki ; Yamamoto, Takashi. / Enhancement of the coercivity in Co-Ni layered double hydroxides by increasing basal spacing. In: Dalton Transactions. 2016 ; Vol. 45, No. 34. pp. 13324-13331.
@article{ffe92c515bdb4a6593292f09c56d23a3,
title = "Enhancement of the coercivity in Co-Ni layered double hydroxides by increasing basal spacing",
abstract = "The magnetic properties of layered double hydroxides (LDH) containing transition metal ions can still develop, compared with layered metal hydroxide salts which exhibit structure-dependent magnetism. In this article, we report the preparation of a hybrid magnet composed of Co-Ni LDH and n-alkylsulfonate anions (Co-Ni-CnSO3 LDH). As Co-Ni LDH is anion-exchangeable, we can systematically control the interlayer spacing by intercalating n-alkylsulfonates with different carbon numbers. The magnetic properties were examined with temperature- and field-dependent magnetization measurements. As a result, we have revealed that the coercive field depends on the basal spacing. It is suggested that increasing the basal spacing varies the competition between the in-plane superexchange interactions and long-range out-of-plane dipolar interactions. Moreover, a jump in the coercive field at around 20 {\AA} of the basal spacing is assumed to be the modification of the magnetic ordering in Co-Ni-CnSO3 LDH.",
author = "Cuijuan Zhang and Tomoya Tsuboi and Hiroaki Namba and Yasuaki Einaga and Takashi Yamamoto",
year = "2016",
doi = "10.1039/c6dt01723a",
language = "English",
volume = "45",
pages = "13324--13331",
journal = "Dalton Transactions",
issn = "1477-9226",
publisher = "Royal Society of Chemistry",
number = "34",

}

TY - JOUR

T1 - Enhancement of the coercivity in Co-Ni layered double hydroxides by increasing basal spacing

AU - Zhang, Cuijuan

AU - Tsuboi, Tomoya

AU - Namba, Hiroaki

AU - Einaga, Yasuaki

AU - Yamamoto, Takashi

PY - 2016

Y1 - 2016

N2 - The magnetic properties of layered double hydroxides (LDH) containing transition metal ions can still develop, compared with layered metal hydroxide salts which exhibit structure-dependent magnetism. In this article, we report the preparation of a hybrid magnet composed of Co-Ni LDH and n-alkylsulfonate anions (Co-Ni-CnSO3 LDH). As Co-Ni LDH is anion-exchangeable, we can systematically control the interlayer spacing by intercalating n-alkylsulfonates with different carbon numbers. The magnetic properties were examined with temperature- and field-dependent magnetization measurements. As a result, we have revealed that the coercive field depends on the basal spacing. It is suggested that increasing the basal spacing varies the competition between the in-plane superexchange interactions and long-range out-of-plane dipolar interactions. Moreover, a jump in the coercive field at around 20 Å of the basal spacing is assumed to be the modification of the magnetic ordering in Co-Ni-CnSO3 LDH.

AB - The magnetic properties of layered double hydroxides (LDH) containing transition metal ions can still develop, compared with layered metal hydroxide salts which exhibit structure-dependent magnetism. In this article, we report the preparation of a hybrid magnet composed of Co-Ni LDH and n-alkylsulfonate anions (Co-Ni-CnSO3 LDH). As Co-Ni LDH is anion-exchangeable, we can systematically control the interlayer spacing by intercalating n-alkylsulfonates with different carbon numbers. The magnetic properties were examined with temperature- and field-dependent magnetization measurements. As a result, we have revealed that the coercive field depends on the basal spacing. It is suggested that increasing the basal spacing varies the competition between the in-plane superexchange interactions and long-range out-of-plane dipolar interactions. Moreover, a jump in the coercive field at around 20 Å of the basal spacing is assumed to be the modification of the magnetic ordering in Co-Ni-CnSO3 LDH.

UR - http://www.scopus.com/inward/record.url?scp=84983655883&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983655883&partnerID=8YFLogxK

U2 - 10.1039/c6dt01723a

DO - 10.1039/c6dt01723a

M3 - Article

AN - SCOPUS:84983655883

VL - 45

SP - 13324

EP - 13331

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9226

IS - 34

ER -