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Title: The effect of precursor types on the magnetic properties of Y-type hexa-ferrite composite

Abstract

With magnetic composite including uniform magnetic particles, we expect to realize good high-frequency soft magnetic properties. We produced needle-like (α-FeOOH) nanoparticles with nearly uniform diameter and length of 20 and 500 nm. Zn-doped Y-type hexa-ferrite samples were prepared by solid state reaction method using the uniform goethite and non-uniform hematite (Fe{sub 2}O{sub 3}) with size of <1 μm, respectively. The micrographs observed by scanning electron microscopy show that more uniform hexagonal plates are observed in ZYG-sample (Zn-doped Y-type hexa-ferrite prepared with non-uniform hematite) than in ZYH-sample (Zn-doped Y-type hexa-ferrite prepared with uniform goethite). The permeability (μ′) and loss tangent (δ) at 2 GHz are 2.31 and 0.07 in ZYG-sample and 2.0 and 0.07 in ZYH sample, respectively. We can observe that permeability and loss tangent are strongly related to the particle size and uniformity based on the nucleation, growth, and two magnetizing mechanisms: spin rotation and domain wall motion. The complex permeability spectra also can be numerically separated into spin rotational and domain wall resonance components.

Authors:
; ; ; ; ; ;  [1]
  1. Samsung Electro-Mechanics Co., Ltd., 314 Maetan 3-dong, yeongtong-gu, Suwon-Si, Gyeonggi-do, Gyeonggi-do 443-743 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22403036
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; DOPED MATERIALS; FERRITES; GHZ RANGE; GOETHITE; HEMATITE; IRON OXIDES; MAGNETIC PROPERTIES; NANOPARTICLES; NUCLEATION; PARTICLE SIZE; PERMEABILITY; PERMITTIVITY; RELAXATION LOSSES; SCANNING ELECTRON MICROSCOPY; SPIN; ZINC COMPOUNDS

Citation Formats

Kim, Chin Mo, Na, Eunhye, Kim, Ingyu, An, Sung Yong, Seo, Jung-wook, Hur, Kangheon, and Kim, Hakkwan, E-mail: hakkwan.kim@samsung.com. The effect of precursor types on the magnetic properties of Y-type hexa-ferrite composite. United States: N. p., 2015. Web. doi:10.1063/1.4918690.
Kim, Chin Mo, Na, Eunhye, Kim, Ingyu, An, Sung Yong, Seo, Jung-wook, Hur, Kangheon, & Kim, Hakkwan, E-mail: hakkwan.kim@samsung.com. The effect of precursor types on the magnetic properties of Y-type hexa-ferrite composite. United States. doi:10.1063/1.4918690.
Kim, Chin Mo, Na, Eunhye, Kim, Ingyu, An, Sung Yong, Seo, Jung-wook, Hur, Kangheon, and Kim, Hakkwan, E-mail: hakkwan.kim@samsung.com. Thu . "The effect of precursor types on the magnetic properties of Y-type hexa-ferrite composite". United States. doi:10.1063/1.4918690.
@article{osti_22403036,
title = {The effect of precursor types on the magnetic properties of Y-type hexa-ferrite composite},
author = {Kim, Chin Mo and Na, Eunhye and Kim, Ingyu and An, Sung Yong and Seo, Jung-wook and Hur, Kangheon and Kim, Hakkwan, E-mail: hakkwan.kim@samsung.com},
abstractNote = {With magnetic composite including uniform magnetic particles, we expect to realize good high-frequency soft magnetic properties. We produced needle-like (α-FeOOH) nanoparticles with nearly uniform diameter and length of 20 and 500 nm. Zn-doped Y-type hexa-ferrite samples were prepared by solid state reaction method using the uniform goethite and non-uniform hematite (Fe{sub 2}O{sub 3}) with size of <1 μm, respectively. The micrographs observed by scanning electron microscopy show that more uniform hexagonal plates are observed in ZYG-sample (Zn-doped Y-type hexa-ferrite prepared with non-uniform hematite) than in ZYH-sample (Zn-doped Y-type hexa-ferrite prepared with uniform goethite). The permeability (μ′) and loss tangent (δ) at 2 GHz are 2.31 and 0.07 in ZYG-sample and 2.0 and 0.07 in ZYH sample, respectively. We can observe that permeability and loss tangent are strongly related to the particle size and uniformity based on the nucleation, growth, and two magnetizing mechanisms: spin rotation and domain wall motion. The complex permeability spectra also can be numerically separated into spin rotational and domain wall resonance components.},
doi = {10.1063/1.4918690},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}