测量了非晶态Fe_(90-x)Ni_xZr_(10)(x=10,20,30)合金淬态和预处理态(573K,45min)样品的起始磁化率等时减落谱和等温减落谱,在等时减落谱的低温区(T<300K)观察到一伴随小峰,本文用二能级模型分析了弛豫过程的可逆性和热处理效应,对可逆减落谱的理论拟合给出可逆弛豫过程的激活能谱P(Q)和特征弛豫时间τ_(OR)。
The disaccommodation (DA) measurements of initial susceptibility were per-formed in amorphous Fe_(90-x)Ni_xZr_(10)(x=10, 20, 30) alloys. The DA was measured for two dif-ferent amorphous states: as--quenched and pretreated at 537 K for 45 min. For all theas--quenched samples, in the isochronal spectra of DA a well defined relaxation peak around350 K is accompanied by a small but distinct peak near the Curie temperature of Fe_(90)Zr_(10) Phase(T_c=230 K). The reversibility and annealing effect on DA are analyzed within the framework oftwo--level model. The fits of the theory to the experimental data of reversible relaxation pro-cesses gave a spectrum of activation energies and pre--exponential factor.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%