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

被引：4
|
作者：
Köhler, K
Mörke, W
Bieruta, T
机构：
[1] Univ Halle Wittenberg, Inst Analyt & Umweltchem, D-06217 Merseburg, Germany
[2] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 144卷 / 1-3期
关键词：
chromium dioxide; ferromagnetic resonance;
D O I：
10.1016/S0927-7757(98)00658-X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ferromagnetic resonance (FMR) investigations (v=9.5 and 35 GHz) of chromium dioxide, (CrO2)-O-IV, supported on titania for different chromium contents (0.7. 7 and 11 wt% Cr) are reported, CrO2 particle diameters of 3-4 nm 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. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：81 / 87
页数：7
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