| Autor: |
Patil, B. L., Sawant, S. R., Patil, S. A. |
| Zdroj: |
Czechoslovak Journal of Physics; January 1993, Vol. 43 Issue: 1 p87-93, 7p |
| Abstrakt: |
The lattice parameter,a, increases with the increase of Ti4+ substitution while it decreases with the increase of Ge4+ substitution in Cu1+xAxFe2-2xO4 compounds [A=Ti4+, Ge4+Sn4+]. On substitution of Sn4+,a does not vary. CuFe2O4 exhibits single domain (SD) behaviour that changes to multi domain (MD) type on Ti4+ substitution. On Ge4+ substitution initially all the compositions exhibit SD behaviour while forx>0.2 they show MD behaviour. All Sn4+ substituted compositions exhibit SD behaviour. The Curie temperature decreases on addition of Ti4+, Sn4+ and Ge4+. The magnetic momentnB (77 K) initially increases and then decreases with the substitution of Ti4+, Ge4+, and Sn4+. This is explained by cation distribution and reduction of Fe3+ ions. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full text from SpringerLink