Magnetic properties of NiCuZn ferrite thin films prepared by the Sol-gel method

作者：Liu Feng^*; Ren Tianling; Yang Chen; Liu Litian; Yu Jun

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2007, 22(3): 506-509.

DOI：10.1007/s11595-006-3506-3

• Ni(0.4)CU(0.2)Zn(0.4)Fe(2)O(4) thin films
• sol-gel method
• rapid thermal processing
• magnetic properties

Ni(0.4)Cu(0.2)Zn(0.4)Fe(2)O(4) thin films were fabricated on Si substrates by using the sol-gel method and rapid thermal annealing (RTA), and their magnetic properties and crystalline structures were investigated. The samples calcined at and above 600 degrees C have a single-phase spinel structure and the average grain size of the sample calcined at 600 degrees C is about 20 nm. The initial permeability mu(i), saturation magnetization M. and coercivity H. of the samples increase with the increasing calcination temperature. The sample calcined at 600 degrees C exhibits an excellent soft magnetic performance, which has mu(i)=33.97 (10 MHz), H = 15.62 Oe and M(s)=228.877 emu/cm(3). Low-temperature annealing can enhance the magnetic properties of the samples. The work shows that using the sol-gel method in conjunction with RTA is a promising way to fabricate integrated thin-film devices.

• 出版日期2007-9
• 单位华中科技大学; 清华大学