The influence of the partial substitution of Fe by Si and thermal treatments on the structural, magnetic and magnetostrictive properties of the Fe_67.5Pd_30.5Si₂ rapidly solidified ribbons has been investigated. A remarkable decrease in the martensite transformation temperature, with ~ 65 K lower than that of the Fe–Pd archetype alloy, is observed in the as-prepared ribbons. The thermal treatments shift the martensite transformation temperatures upward, with approximately 13 K for the higher thermal treatment. Also, these induce an improvement in the crystallinity in these ribbons with high texture and an increase in the crystallite size as a result of reducing the internal defects and stress. The thermodynamic considerations discussed in the frame of the Clapeyron–Clausius relation by using the calorimetric and thermomagnetic measurements (up to 7 T) reveal a weak influence of the magnetic fields on the martensitic transformation temperatures (~ 0.5 K/T). The magnetostriction decrease with temperature under small magnetic fields was discussed, beside an unusual behaviour in the technically saturated domain. This behaviour is based on the coexistence of the ordinary and forced magnetostrictions, the last one increasing faster with the temperature decreasing.

Si对Fe的部分取代和热处理对Fe _67.5 Pd _30.5 Si ₂的结构，磁和磁致伸缩性能的影响快速固化的碳带已得到研究。在准备好的薄带中观察到马氏体转变温度显着降低，比Fe-Pd原型合金低65K。热处理使马氏体相变温度向上移动，对于更高的热处理，温度约为13K。而且，由于减少了内部缺陷和应力，这些导致具有高织构的带的结晶度的改善和微晶尺寸的增加。通过使用量热法和热磁法（最高7 T）在克拉皮隆－克劳修斯关系的框架中讨论的热力学考虑，揭示了磁场对马氏体相变温度（〜0.5 K / T）的微弱影响。讨论了在小磁场下磁致伸缩随温度的降低，以及在技术饱和域中的异常行为。此行为基于普通和强制磁致伸缩的共存，最后一个随温度降低而加快。