Wiedemann effect of Fe-Ga based magnetostrictive wires

• 来源期刊: 中国物理B（英文版）
• 关键词: Fe-Ga alloy wires Wiedemann effect magnetostriction
• 年，卷（期）: 2012,（8）
• 页码范围: 476-481
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/21/8/087501

摘要

(Fe83Gal7)gsCr2 wires each with a diameter of 0.7 mm are prepared by hot swaging and warm drawing from the casting rods directly,because the ductility of Fe83Ga17alloy is improved by adding Cr element.The Wiedemann twists and dependences on magnetostrictions of Fes3Ga17 and (Fes3Ga17)98Cr2 wires are investigated.The largest observed Wiedemann twists of 245 s.cm-1 and 182 s.cm-1 are detected in the annealed Fe83Ga17 and (Fe83Ga17)98Cr2 wires,respectively.The magnetostrictions of the annealed Fes3Ga17 and (FesaGa17)98Cr2 wires are 160 ppm and 107 ppm,respectively.The maximum of the Wiedemann twist increases with magnetostriction increasing.However the magnetostriction is just one important factor that affects the Wiedemann effect of alloy wire,and the relationship between magnetostriction and Wiedemann effect is a complex function rather than a simple function.