|
Dyuthi @ CUSAT >
e-SCHOLARSHIP >
Physics >
Faculty >
Dr. M R Anantharaman >
Please use this identifier to cite or link to this item:
http://purl.org/purl/4419
|
| Title: | Synthesis and characterization of γ-Fe2O3—a magnetic tape material |
| Authors: | Anantharaman, M R
Seshan, K
Chakrabarty, D K
Keer, H V |
| Keywords: | magnetic tape materials
synthesis of "/-Fe~Oa
magnetization. |
| Issue Date: | 20-Feb-1981 |
| Publisher: | Springer |
| Abstract: | Acicular FeC~O4-2H20 was precipitated from glycerol and starch
media. Thermal decomposition of this oxalate in dry and moist nitrogen yielded
primarily FeO and Fe 3Oa respectively. Characterization was attempted through
DTA, TG, x-ray diffraction, TEM and magnetization studies. It was found
that the oxalate can be completely decomposed to FeaO~ in moist nitrogen
(PH~o ,"-" 35 torr) at 775 K and then oxidised by dry air to acicular "/-Fe~Oa at
575 K. The resulting material has saturation magnetization (,-,., 70 emu/g),
coercive field (N300 Oe) and squareness ratio ( ,~, 0-60-0-65), which values art
comparable with those of the commercial samples |
| Description: | Bull. Mater. Sci,, Vol, 3, Number 3, November 1981, pp. 275-280. |
| URI: | http://dyuthi.cusat.ac.in/purl/4419 |
| Appears in Collections: | Dr. M R Anantharaman
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
