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A 236-GHz Fe EPR STUDY OF NANO-PARTICLES OF THE FERRO-MAGNETIC ROOM-TEMPERATURE SEMICONDUCTOR Sn(1-x)Fe(x)O(2)(x=0.005).

Author(s): Misra SK, Andronenko SI, Punnoose A, Tipikin D, Freed JH

Appl Magn Reson. 2009 Dec 01;36(2):291-295 Authors: Misra SK, Andronenko SI, Punnoose A, Tipikin D, Freed JH

Article GUID: 20161547
A multifrequency EPR study of Fe2+ and Mn2+ ions in a ZnSiF(6).6H2O single crystal at liquid-helium temperatures.

Author(s): Misra SK, Diehl S, Tipikin D, Freed JH

J Magn Reson. 2010 Jul;205(1):14-22 Authors: Misra SK, Diehl S, Tipikin D, Freed JH

Article GUID: 20395160
Study of paramagnetic defect centers in as-grown and annealed TiO2 anatase and rutile nanoparticles by a variable-temperature X-band and high-frequency (236 GHz) EPR.

Author(s): Misra SK, Andronenko SI, Tipikin D, Freed JH, Somani V, Prakash O

J Magn Magn Mater. 2016 Mar 01;401:495-505 Authors: Misra SK, Andronenko SI, Tipikin D, Freed JH, Somani V, Prakash O

Article GUID: 27041794
Title:A multifrequency EPR study of Fe2+ and Mn2+ ions in a ZnSiF(6).6H2O single crystal at liquid-helium temperatures.
Authors:Misra SK,  Diehl S,  Tipikin D,  Freed JH
Link:https://www.ncbi.nlm.nih.gov/pubmed/20395160?dopt=Abstract
Category:J Magn Reson
PMID:20395160
Dept Affiliation: PHYSICS
1 Physics Department, Concordia University, 1455 de Maisonneuve Boulevard West, Montreal, Quebec, Canada H3G 1M8. skmisra@alcor.concordia.ca

Description:

A multifrequency EPR study of Fe2+ and Mn2+ ions in a ZnSiF(6).6H2O single crystal at liquid-helium temperatures.

J Magn Reson. 2010 Jul;205(1):14-22

Authors: Misra SK, Diehl S, Tipikin D, Freed JH

Abstract

A liquid-helium temperature study of Fe2+ and Mn2+ ions has been carried out on a single crystal of Fe2+-doped ZnSiF(6).6H2O at 5-35K at 170, 222.4 and 333.2G Hz. The spectra are found to be an overlap of two magnetically inequivalent Fe2+ ions, as well as that of an Mn2+ ion. From the simulation of the EPR line positions for the Fe2+ (d6, S=2) ion the spin-Hamiltonian parameters were estimated for the two inequivalent Fe2+ ions at the various temperatures. From the relative intensities of lines the absolute sign of the fine-structure parameters have been estimated. In addition, the fine-structure and hyperfine-structure spin-Hamiltonian parameters for the Mn2+ ion, present as impurity at interstitial sites, were estimated from the hyperfine allowed and forbidden line positions. The particular virtues of such a single-crystal study vs. that on powders are noted.

PMID: 20395160 [PubMed - indexed for MEDLINE]