Mn-based magnetic alloys and compounds having large magnetic anisotropy are currently focused as alternate materials for various spintronic applications. In this work, magnetization behavior of Co₃Mn alloy nanowires (NWs) was investigated by fabricating with well-known template-based electrodeposition method where the electrodeposition was carried out at sinusoidal high voltage. The NWs were annealed at 300 °C and 400 °C with 10 °C/min heating and cooling rate to eliminate the crystal defects caused by high-voltage deposition. Crystal structure analysis displayed the as-deposited NWs were crystallized into a face-centered cubic (fcc) structure with crystallite size 24.93 nm, while the hexagonal close pack (hcp) phase with crystallite size 38.61 nm was induced after annealing. The as-deposited NWs exhibited the soft ferromagnetic behavior with coercivity (\(H_{{\text{C}}}\)) = 128 Oe and saturation magnetization (\(M_{{\text{S}}}\)) = 311 emu/cm³ along axial direction but magnetic hardening induced after annealing with \(H_{{\text{C}}}\) = 688 Oe and \(M_{{\text{S}}}\) = 228 emu/cm³ caused by strong pinning effects and elastic coupling between hcp and fcc phase. Interestingly, the asymmetric shift in MH-loops of annealed NWs was noted below 150 K when the temperature-dependent MH-loops measured after cooling the sample in the magnetic field. This observation confirmed the existence of exchange bias effect in NWs caused by short-range exchange interaction between ferromagnetic fcc phase and antiferromagnetic hcp phase.

Mn基磁性合金和具有大的磁各向异性的化合物目前被聚焦为各种自旋电子学应用的替代材料。在这项工作中，通过使用公知的基于模板的电沉积方法制造Co ₃ Mn合金纳米线（NWs）的磁化行为，该方法在正弦高压下进行电沉积。NW在300°C和400°C下以10°C / min的加热和冷却速率退火，以消除由高压沉积引起的晶体缺陷。晶体结构分析显示，沉积的NWs结晶为面心立方（fcc）结构，微晶尺寸为24.93 nm，而六方密堆积（hcp退火后诱导出具有38.61nm的微晶尺寸的）相。沉积的NW表现出软铁磁行为，矫顽力（\（H _ {{\ text {C}}}} \））= 128 Oe，饱和磁化强度（\（M _ {{\ text {S}}} \）） = 311鸸鹋/厘米³沿轴向但与退火后诱导的磁硬化\（H _ {{\文本{C}}} \）  = 688奥斯特和\（M _ {{\文本{S}}} \）  = 228由强钉扎效应和hcp与fcc相之间的弹性耦合引起的emu / cm ³。有趣的是，当温度依赖的MH值低于150 K时，退火NW的MH环的不对称位移被注意到-在磁场中冷却样品后测量的环。该观察结果证实了由于铁磁fcc相和反铁磁hcp相之间的短程交换相互作用而在NWs中存在交换偏置效应。