Magnetic and Structural Properties of Electrodeposited Nickel thin film on ITO

• Main Authors: Chien-Fu Chen, 陳建夫
• Other Authors: Huei-Ying Ho, Ph. D.
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/83123411954971115317

碩士 === 國立臺北教育大學 === 自然科學教育學系碩士班 === 101 === In this study, we discuss the impact on the H3BO3 with NiSO4 and nickel-plated conductive glass ITO. Preliminary experiment is using Cyclic Voltammetry (CV) to identify the most suitable voltage range, then with the way of the fixed electroplating voltage to get the relationship of current versus time (referred to as CA). And last, using measurement instruments to observe Ni on the ITO nucleation mechanism. We found that passing through the nickel peak, the current increased, speculating that hydrogen evolution reaction (HER) and the magnetic of nanoparticles are at this stage; the longer the time of HER the higher the hydroxide oxidation peak, while adding the boric acid reduce its peak value, which means that the boric acid plays an important role in this reaction. When the H3BO3 of 0.02M, nickel (-0.988)V electroplating to 60mC, the magnetic phase transition occurs; And we will rise voltage to 1.5V, the characteristics will advance to the number of low-Coulomb, and we speculated that a lot of factors from structural deformation leads to stress, which called the magnetic phase transitions.