DocumentCode :
765693
Title :
Crystallographic and Magnetic Properties of KFeO 
Author :
Moon, Seung Je ; Shim, In-Bo ; Kim, Chul Sung
Author_Institution :
Dept. of Phys., Kookmin Univ., Seoul
Volume :
42
Issue :
10
fYear :
2006
Firstpage :
2879
Lastpage :
2881
Abstract :
The crystallographic and magnetic properties of KFeO2 powder prepared by ball-mill method, have been studied by X-ray diffraction (XRD), Mossbauer spectroscopy, and vibrating sample magnetometer (VSM) measurements. The crystal structure of KFeO2 powder at room temperature is determined to be an orthorhombic structure of Pbca with its lattice constants a0=5.594,b0 =11.247, and c0=15.863 Aring by Reitveld refinement. The M-H curves show antiferromagnetic behavior at 34 K and room temperature. Mossbauer spectra of KFeO2 were taken at various temperatures ranging from 4.2 to 600 K. And the Neel temperature (TN) was determined to be 930 K. The magnetic hyperfine field and isomer shift value at 4.2 K were 519 kOe and 0.19 mm/s, respectively
Keywords :
Mossbauer spectroscopy; X-ray diffraction; antiferromagnetism; ball milling; iron alloys; magnetic particles; magnetometers; potassium alloys; 4.2 to 600 K; 930 K; KFeO2; M-H curves; Mossbauer spectra; Mossbauer spectroscopy; Neel temperature; Reitveld refinement; VSM measurements; X-ray diffraction; XRD; ball-mill method; crystal structure; crystallographic properties; magnetic hyperfine field; magnetic properties; orthorhombic structure; vibrating sample magnetometer; Crystallography; Magnetic properties; Magnetometers; Powders; Spectroscopy; Temperature distribution; Vibration measurement; X-ray diffraction; X-ray imaging; X-ray scattering; Alkali materials; MÖssbauer spectroscopy; ball-mill method; potassium;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2006.880275
Filename :
1704469
Link To Document :
