120th General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Exhibition Hall 2+3
Time 10월 19일 (목요일) 11:00~12:30
Code MAT.P-387
Subject GHz Band Selective Microwave Absorption Properties of Submicron Magnetite
Authors Keum-Chul Seo, Jin-Seung Jung*
Department of Chemistry, Gangneung-Wonju National University, Korea
Abstract The increased development and use of electronic devices have led to a new kind of pollution known as electromagnetic interference(EMI). The interference effect leads to not only malfunction of electronic devices but also serious issues such as the human diseases like headache, leukemia and cancer. Many researchers have investigated the efficient shielding methods to reduce EMI. The aim of this work is to find out the effect of cluster size on the electromagnetic wave absorption properties. Investigation of these absorbers has mostly concentrated on the enhanced EM wave absorption performance. But the EM absorption material, which selectively shields frequency region is rarely reported. In this work, paramagnetic Fe3O4 nanoparticles are synthesized controlling the size of Fe3O4 nanoparticles by hydrothermal reaction. The X-ray diffraction patterns and scanning electron microscopy images have confirmed the formation Fe3O4 nanoparticles. We have studied the EMI shielding effect and EMI shielding mechanism of Fe3O4 nanoparticles of different sizes in the range of 1~18 GHz. The reflection loss shifted to the lower frequency with increasing thickness and also the reflection loss shifted to the lower frequency with increase in cluster size of Fe3O4 nanoparticles.
E-mail tjrmacjf374@naver.com