Tekgül Atakan, Alper Mürsel, Kockar Hakan, Safak Mürşide, Karaagac Oznur
Department of Physics, Science and Literature Faculty, Uludag University, 16059 Görükle, Bursa, Turkey.
J Nanosci Nanotechnol. 2010 Nov;10(11):7783-6. doi: 10.1166/jnn.2010.2882.
A series of CoFe/Cu multilayers were electrodeposited on Ti substrates from the electrolytes containing their metal ion under potentiostatic control, but the Fe concentration in the electrolytes was changed from 0.0125 M to 0.2 M. The deposition was carried out in a three-electrode cell at room temperature. The deposition of Cu layers was made at a cathode potential of -0.3 V with respect to saturated calomel electrode (SCE), while the ferromagnetic CoFe layers were deposited at -1.5 V versus SCE. The structural studies by X-ray diffraction revealed that the multilayers have face-centered-cubic structure. The magnetic characteristics of the films were investigated using a vibrating sample magnetometer and their easy-axis was found to be in film plane. Magnetoresistance measurements were carried out using the Van der Pauw method at room temperature with magnetic fields up to +/- 12 kOe. All multilayers exhibited giant magnetoresistance (GMR) and the GMR values up to 8% were obtained.
在恒电位控制下，从含有金属离子的电解液中，在钛基底上电沉积一系列CoFe/Cu多层膜，但电解液中铁的浓度从0.0125 M变化到0.2 M。沉积在室温下的三电极池中进行。相对于饱和甘汞电极（SCE），铜层在-0.3 V的阴极电位下沉积，而铁磁CoFe层在相对于SCE为-1.5 V时沉积。X射线衍射的结构研究表明，多层膜具有面心立方结构。使用振动样品磁强计研究了薄膜的磁特性，发现其易轴在薄膜平面内。在室温下，使用范德堡法在高达±12 kOe的磁场下进行磁电阻测量。所有多层膜均表现出巨磁电阻（GMR），并获得了高达8%的GMR值。
