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Title: Cluster glass state and photoinduced effects on the freezing dynamics in K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4)

Abstract

The magnetic properties and photoinduced magnetization of a Prussian blue analog, K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4) were systematically studied. The frequency dependence of the linear ac susceptibility, the irreversibility in the field-cooled/zero-field-cooled magnetization (M{sub FC}/M{sub ZFC}), and the relaxation of M{sub ZFC} suggest a cluster glass behavior. Illumination with red light leads to an increase in the magnetic irreversibility. While M{sub FC} is significantly increased after illumination, M{sub ZFC} at low temperatures is decreased. The observed photoinduced magnetic effects are explained within a cluster glass model. The photoinduced increase in the concentration of spins leads to a shift of dynamics toward longer length and time scales, resulting in freezing of spin clusters at a higher temperature. (c) 2000 American Institute of Physics.

Authors:
 [1];  [2];  [2];  [1]
  1. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)
  2. Department of Chemistry, University of Utah, Salt Lake City, Utah 84112 (United States)
Publication Date:
OSTI Identifier:
20216260
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MAGNETIZATION; ORGANOMETALLIC COMPOUNDS; CYANIDES; COBALT COMPOUNDS; IRON COMPOUNDS; CHARGE TRANSPORT; MAGNETIC SUSCEPTIBILITY; FREQUENCY DEPENDENCE; EXPERIMENTAL DATA

Citation Formats

Pejakovic, D. A., Manson, J. L., Miller, J. S., and Epstein, A. J. Cluster glass state and photoinduced effects on the freezing dynamics in K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4). United States: N. p., 2000. Web. doi:10.1063/1.372602.
Pejakovic, D. A., Manson, J. L., Miller, J. S., & Epstein, A. J. Cluster glass state and photoinduced effects on the freezing dynamics in K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4). United States. doi:10.1063/1.372602.
Pejakovic, D. A., Manson, J. L., Miller, J. S., and Epstein, A. J. Mon . "Cluster glass state and photoinduced effects on the freezing dynamics in K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4)". United States. doi:10.1063/1.372602.
@article{osti_20216260,
title = {Cluster glass state and photoinduced effects on the freezing dynamics in K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4)},
author = {Pejakovic, D. A. and Manson, J. L. and Miller, J. S. and Epstein, A. J.},
abstractNote = {The magnetic properties and photoinduced magnetization of a Prussian blue analog, K{sub x}Co[Fe(Cn){sub 6}]{sub y}{center_dot}ZH{sub 2}O (x{approx}0.16, y{approx}0.72, z{approx}4.4) were systematically studied. The frequency dependence of the linear ac susceptibility, the irreversibility in the field-cooled/zero-field-cooled magnetization (M{sub FC}/M{sub ZFC}), and the relaxation of M{sub ZFC} suggest a cluster glass behavior. Illumination with red light leads to an increase in the magnetic irreversibility. While M{sub FC} is significantly increased after illumination, M{sub ZFC} at low temperatures is decreased. The observed photoinduced magnetic effects are explained within a cluster glass model. The photoinduced increase in the concentration of spins leads to a shift of dynamics toward longer length and time scales, resulting in freezing of spin clusters at a higher temperature. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.372602},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}