Magnetic resonance (FMR, EPR) of chromium dioxide supported on titania

K. Köhler; W. Mörke; T. Bieruta

doi:10.1016/S0927-7757(98)00658-X

Magnetic resonance (FMR, EPR) of chromium dioxide supported on titania

K. Köhler, W. Mörke, T. Bieruta

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4 Scopus citations

Abstract

Ferromagnetic resonance (FMR) investigations (ν=9.5 and 35GHz) of chromium dioxide, Cr(IV)O₂, supported on titania for different chromium contents (0.7, 7 and 11wt% Cr) are reported. CrO₂ particle diameters of 3-4nm were calculated from the thermomagnetic curves (Griscom's model). The temperature dependence of the line widths and simulations of the FMR powder spectra indicate contributions of axial anisotropy and additionally strong interactions of CrO₂ with the TiO₂ surface. In addition to Cr(IV), varying amounts of Cr(V) and Cr(VI) were observed. Copyright (C) 1998 Elsevier Science B.V.

Original language	English
Pages (from-to)	81-87
Number of pages	7
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	144
Issue number	1-3
DOIs	https://doi.org/10.1016/S0927-7757(98)00658-X
State	Published - 20 Dec 1998
Externally published	Yes

Keywords

Chromium dioxide
Ferromagnetic resonance

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10.1016/S0927-7757(98)00658-X

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@article{80981ccb86d9457e9ed6031e75b05cb6,

title = "Magnetic resonance (FMR, EPR) of chromium dioxide supported on titania",

abstract = "Ferromagnetic resonance (FMR) investigations (ν=9.5 and 35GHz) of chromium dioxide, Cr(IV)O2, supported on titania for different chromium contents (0.7, 7 and 11wt% Cr) are reported. CrO2 particle diameters of 3-4nm were calculated from the thermomagnetic curves (Griscom's model). The temperature dependence of the line widths and simulations of the FMR powder spectra indicate contributions of axial anisotropy and additionally strong interactions of CrO2 with the TiO2 surface. In addition to Cr(IV), varying amounts of Cr(V) and Cr(VI) were observed. Copyright (C) 1998 Elsevier Science B.V.",

keywords = "Chromium dioxide, Ferromagnetic resonance",

author = "K. K{\"o}hler and W. M{\"o}rke and T. Bieruta",

note = "Funding Information: The authors thank Professor R. Kirmse, University of Leipzig, for the possibility of measuring magnetic resonance spectra at his laboratories. K.K. wishes to thank the Stiftung Stipendienfonds des Verbandes der Chemischen Industrie (F.R.G.) for a grant (Liebig-Stipendium) and T.B. the VW Stiftung (F.R.G.) for financial support.",

year = "1998",

month = dec,

day = "20",

doi = "10.1016/S0927-7757(98)00658-X",

language = "English",

volume = "144",

pages = "81--87",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

issn = "0927-7757",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Magnetic resonance (FMR, EPR) of chromium dioxide supported on titania

AU - Köhler, K.

AU - Mörke, W.

AU - Bieruta, T.

N1 - Funding Information: The authors thank Professor R. Kirmse, University of Leipzig, for the possibility of measuring magnetic resonance spectra at his laboratories. K.K. wishes to thank the Stiftung Stipendienfonds des Verbandes der Chemischen Industrie (F.R.G.) for a grant (Liebig-Stipendium) and T.B. the VW Stiftung (F.R.G.) for financial support.

PY - 1998/12/20

Y1 - 1998/12/20

N2 - Ferromagnetic resonance (FMR) investigations (ν=9.5 and 35GHz) of chromium dioxide, Cr(IV)O2, supported on titania for different chromium contents (0.7, 7 and 11wt% Cr) are reported. CrO2 particle diameters of 3-4nm were calculated from the thermomagnetic curves (Griscom's model). The temperature dependence of the line widths and simulations of the FMR powder spectra indicate contributions of axial anisotropy and additionally strong interactions of CrO2 with the TiO2 surface. In addition to Cr(IV), varying amounts of Cr(V) and Cr(VI) were observed. Copyright (C) 1998 Elsevier Science B.V.

AB - Ferromagnetic resonance (FMR) investigations (ν=9.5 and 35GHz) of chromium dioxide, Cr(IV)O2, supported on titania for different chromium contents (0.7, 7 and 11wt% Cr) are reported. CrO2 particle diameters of 3-4nm were calculated from the thermomagnetic curves (Griscom's model). The temperature dependence of the line widths and simulations of the FMR powder spectra indicate contributions of axial anisotropy and additionally strong interactions of CrO2 with the TiO2 surface. In addition to Cr(IV), varying amounts of Cr(V) and Cr(VI) were observed. Copyright (C) 1998 Elsevier Science B.V.

KW - Chromium dioxide

KW - Ferromagnetic resonance

UR - http://www.scopus.com/inward/record.url?scp=0032553858&partnerID=8YFLogxK

U2 - 10.1016/S0927-7757(98)00658-X

DO - 10.1016/S0927-7757(98)00658-X

M3 - Article

AN - SCOPUS:0032553858

SN - 0927-7757

VL - 144

SP - 81

EP - 87

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

ER -

Magnetic resonance (FMR, EPR) of chromium dioxide supported on titania

Abstract

Keywords

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