Temperature dependence of the magnetocrystalline anisotropy constant, K//1, and the magnetostriction constants, lambda //1//0//0 and lambda //1//1//1, were determined for iron-alloy single crystals, one containing 4. 8 wt% Si and 5. 0 wt% Al, the other 4. 7 wt% Si and 3. 8 wt% Al. The temperature dependence and magnitude of K//1 for the two alloys were completely different: 9. 1 multiplied by 10**3 erg/cm**3 and 1. 1 multiplied by 10**5 erg/cm**3, respectively, both at room temperature. The values of lambda //1//0//0 and lambda //1//1//1 ( multiplied by 10**-**6) at room temperature were 4. 8 and 9. 8 for the former, and 7. 8 and 5. 7 for the latter alloy. A unique diffraction line, due to the existence of a DO//3-type ordered structure, was clearly observed for both alloys. The results indicate that a discrete change in the values of K//1 occurs at the phase boundary between the alpha and the alpha plus DO//3 phases and that the magnitude of K//1 for the alloy samples consisting of the DO ordered phase is smaller than that for the alpha plus DO//3 phase.
|Number of pages||6|
|Journal||IEEE translation journal on magnetics in Japan|
|Publication status||Published - 1985 Sep|
ASJC Scopus subject areas