The variation of 4πMs, Tcand Ga/Fe ratio with LPE growth temperature in bubble domain films

Magnetic bubble domain films of nominal composition EuEr
₂
Ga
_0.7
Fe
_4.3
O
₁₂
have been successfully grown on (111) GGG substrate by the modified dipping technique. [1] Levinstein et al. [1] have reported that Ga/Fe decreases with the temperature of growth of the films. Quantitative results are reported here for the variation of 4πM
_S
, T
_c
, and the Ga/Fe ratio of the film with the temperature of LPE growth within the supercooled region. A series of films has been grown under identical conditions except for the temperature of the melt, which can be varied within a 45°C range. The thickness, magnetization, and Curie temperature [2] were measured. The Ga/Fe ratio of the films analyzed by the electron microprobe technique varied almost 25% with the change of temperature of the melt. A plot of 4πM
_S
versus Ga/Fe shows nearly linear variation.