Title :
Magnetic Properties of Electrodeposited Nickel-Multiwall Carbon Nanotube Composite Films
Author :
Nasirpouri, Farzad ; Daneshvar-Fattah, Farhad ; Samardak, Alexander ; Sukovatitsina, Ekaterina ; Ognev, Alexey ; Chebotkevich, Liudmila
Author_Institution :
Fac. of Mater. Eng., Sahand Univ. of Technol., Tabriz, Iran
Abstract :
Coelectrodeposition of Ni with multiwall carbon nanotubes (MWCNTs) was successfully carried out by noncovalent functionalization. Microstructure and magnetic properties of Ni-matrix nanocomposites films were investigated in a range of MWCNTs content from 2% to 5.1%. The MWCNT content was controlled by current density and MWCNT concentration in the solution. Ni-matrix composite films exhibit polycrystalline microstructure having different texture factors along (111) and (200) crystallographic orientations. The nanocomposites films show in-plane easy axis of magnetization. However, coercivity and squareness variations imply that magnetocrystalline anisotropy, grain size, and morphology as well as Ni/carbon nanotube interfacial microstrain play crucial roles in the magnetization process.
Keywords :
coercive force; current density; electrodeposition; grain size; magnetic anisotropy; magnetic hysteresis; magnetic thin films; multi-wall carbon nanotubes; nanocomposites; nanomagnetics; nickel; surface magnetism; surface morphology; surface texture; (111) crystallographic orientation; (200) crystallographic orientation; MWCNT; Ni-C; coercivity; current density; electrodeposition; grain size; in-plane magnetization easy axis; interfacial microstrain; magnetic properties; magnetocrystalline anisotropy; morphological properties; nanocomposites films; nickel-multiwall carbon nanotube composite films; noncovalent functionalization; polycrystalline microstructure; squareness variations; texture factors; Carbon nanotubes; Current density; Films; Magnetic properties; Nickel; Perpendicular magnetic anisotropy; Composite; Crystalline structure; Film; MWCNT; Magnetisation; Nickel; crystalline structure; film; magnetization; multiwall carbon nanotube (MWCNT); nickel;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2448122
