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Ferrites:Preparation, Micro-Structures and Properties

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: closed (20 April 2023) | Viewed by 1872

Special Issue Editor

School of Materials Sciences and Engineering, Anhui University, Hefei 230601, China
Interests: hexaferrites; spinel ferrites; garnet ferrites; amorphous nanocrystalline soft magnetic materials; high-entropy ceramics; microwave absorbing materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is focused on original research articles and critical reviews on “Ferrites:preparation, micro-structures and properties". The main aim is to focus on related topics by publishing the current developments in ferrites.

Ferrites are a broad class of iron-containing oxides, including hexagonal ferrites (hexaferrites) such as SrFe12O19, spinel ferrites MFe2O4, garnet ferrites R3Fe5O12, and perovskites MFeO3. Ferrites have attracted considerable attention due to their wide applicability, such as in permanent magnets, magnetic recording, and RF and microwave applications. Currently, ferrites are being explored for more exotic applications. This is particularly true of their application as electronic components for mobile and wireless communications at microwave/GHz frequencies; electromagnetic wave absorbers for EMC, RAM and stealth technologies; and as composite materials.

This Special Issue of Materials on “Ferrites:preparation, micro-structures and properties" will closely follow the research in this topic to highlight the recent achievements of ferrites from leading groups around the world. We appreciate the submission of articles on the synthesis, structure and properties of ferrites, as well as their applications.

In particular, the topics of interest include but are not limited to:

  • Hexaferrites
  • Spinel ferrites
  • Garnet ferrite
  • Perovskites
  • Composites of ferrites and other materials

Dr. Yujie Yang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ferrites
  • magnetic properties
  • dielectric properties
  • microwave properties
  • optical properties
  • structural properties
  • ion substitution
  • morphology
  • composites

Published Papers (1 paper)

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Research

9 pages, 1920 KiB  
Article
Crystallographically Textured and Magnetic LaCu-Substituted Ba-Hexaferrite with Excellent Gyromagnetic Properties
by Zan Jiao, Yuantao Wang, Meng Wei, Qifan Li, Ziyu Li, Alexander S. Sokolov, Chengju Yu, Xiaona Jiang, Chuanjian Wu, Zhongwen Lan, Ke Sun, Zhong Yu and Vincent G. Harris
Materials 2022, 15(24), 8792; https://doi.org/10.3390/ma15248792 - 9 Dec 2022
Cited by 2 | Viewed by 1340
Abstract
Excellent gyromagnetic properties of textured, bulk Ba-hexaferrite samples are required for low-loss, self-biased applications for microwave and millimeter-wave (MMW) devices. However, conventionally processed bulk Ba-hexaferrite ceramics typically demonstrate low remanent magnetization values, 4πMr, of 2.0~3.0 kG, and relatively large ferromagnetic [...] Read more.
Excellent gyromagnetic properties of textured, bulk Ba-hexaferrite samples are required for low-loss, self-biased applications for microwave and millimeter-wave (MMW) devices. However, conventionally processed bulk Ba-hexaferrite ceramics typically demonstrate low remanent magnetization values, 4πMr, of 2.0~3.0 kG, and relatively large ferromagnetic resonance (FMR) linewidths, ΔHFMR, of 0.8~2 kOe. These properties lead to the development of high-performance, practical devices. Herein, crystallographically textured Ba-hexaferrite samples, of the composition Ba0.8La0.2Fe11.8Cu0.2O19, having excellent functional properties, are proposed. These materials exhibit strong anisotropy fields, Ha, of ~14.6 kOe, high remanent magnetization, 4πMr, of 3.96 kGs, and a low ΔHFMR of 401 Oe at zero-bias field at the Q-band. Concomitantly, the broadband millimeter-wave transmittance was utilized to determine the complex permeability, μ*, and permittivity, ε*, of textured hexaferrites. Based on Schlöemann’s theory of complex permeability, μ*, the remanent magnetization, 4πMr, anisotropy field, Ha, and effective linewidth, ΔHeff, were estimated; these values agree well with measured values. Full article
(This article belongs to the Special Issue Ferrites:Preparation, Micro-Structures and Properties)
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