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Journal of Materials Science and Nanotechnology | Volume: 2

August 20-21, 2018 | Paris, France

Materials Science and Materials Chemistry

International Conference on

Magnetic and optical switching properties of Cu-Ni-Zn ferrite thin films via spin-spray deposition

method

Hyoung Woo Yang

and

Woo-Sung Lee

Korea Electronics Technology Institute, Republic of Korea

e report relevant magnetic properties and reproducible

optical switching performance of typical spinel structures

in which the Cu-Ni-Zn ferrite thin films on SiO

substrates

were fabricated by a spin-spray deposition method. Structure

analysis indicates that the crystal structure of Cu-Ni-Zn ferrite

film is spinel structure, which also has a columnar structure

normal to the surface. The Cu-Ni-Zn ferrite films exhibit high

permeabilities that exceed the Snoek limit for bulk ferrites.

The ferrite films have relatively high permeability µ’ ~ 600 up

to 50 MHz and is promising to be used as thin film devices

such as magnetic applications. Furthermore, we employed

the electrical transport studies to understand the electrical

properties by scanning out the resistance difference originated

from the light. The result indicated clearly that the electrical

transport is consistent with the light showing that uniform

optical switching properties in the Cu-Ni-Zn ferrite films can be

strongly affected by a subtle interplay between the photon and

excited electrons. On the basis of the analysis of current-voltage

characteristic and its light dependence, we discuss the origin

of this effect and address the possibility of obtaining optical

controlled Cu-Ni-Zn ferrite films for practical applications.