Fine Tuning of Magnetic Iron Oxide Nanostructures

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Materials".

Deadline for manuscript submissions: 20 July 2026 | Viewed by 682

Special Issue Editor


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Guest Editor
National Institute of Materials Physics, Magurele, Romania
Interests: magnetic nanomaterials; Fe oxide nanostructures; functional magnetic composites; Mössbauer spectroscopy; magnetometry

Special Issue Information

Dear Colleagues,

Magnetic iron-oxide-based nanoparticles, thin films and nanowires are of special interest in the scientific community due to their versatility. They are fundamental components in so many fields ranging from permanent magnet market, spintronics, microwave technology and biomedical applications to water decontamination. Precise tuning of their remarkable properties can be performed by preparation and processing conditions, dopants, intralayers, coatings, strain, etc. Slight variations in size, morphology, geometry, etc., can influence considerably the end results.

I would like to invite you to contribute a research paper or review to the Special Issue “Fine Tuning of Magnetic Iron Oxide Nanostructures”.

This Special Issue is focused on the latest insights into adjusting specific functionalities in order to resolve some of the current necessities of modern magnetic materials.

The following research fields are highlighted:

  • Nanomagnetism;
  • Functional materials;
  • Smart materials and composites;
  • Biomaterials;
  • Ferrites;
  • Interfacial coupling;
  • Annealing in magnetic fields;
  • Dopants;
  • Size effects.

Original research articles, reviews, and short communications are encouraged.

We look forward to your valuable contributions to this Special Issue.

Dr. Simona Gabriela Greculeasa
Guest Editor

Manuscript Submission Information

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Keywords

  • nanomagnetism
  • functional materials
  • smart materials and composites
  • biomaterials
  • ferrites
  • interfacial coupling
  • annealing in magnetic fields
  • dopants
  • size effects

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Published Papers (1 paper)

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Review

22 pages, 5584 KB  
Review
Rare-Earth-Free Exchange-Coupled Nanocomposites Based on M-Type Hexaferrites
by Simona Gabriela Greculeasa and Ovidiu Crișan
Magnetochemistry 2025, 11(11), 99; https://doi.org/10.3390/magnetochemistry11110099 - 11 Nov 2025
Viewed by 361
Abstract
Efficient permanent magnets that are concomitantly economically viable are of paramount importance for allowing industrial stakeholders to maintain a growing and competitive advantage. This study provides a comprehensive overview of recent developments in the field of rare-earth-free nanocomposite permanent magnets based on hexaferrites. [...] Read more.
Efficient permanent magnets that are concomitantly economically viable are of paramount importance for allowing industrial stakeholders to maintain a growing and competitive advantage. This study provides a comprehensive overview of recent developments in the field of rare-earth-free nanocomposite permanent magnets based on hexaferrites. The basic phenomenology of exchange-spring-coupled nanocomposites, comprising hard and soft magnetic components, is thoroughly explained. The use of hexaferrites as a hard phase, serving as a viable alternative to rare-earth-based permanent magnets, is extensively discussed, taking economical, accessibility-related, and environmental aspects into consideration. State-of-the-Art architectures of hard–soft magnetic nanocomposites based on hexaferrites as the hard magnetic phase, ranging from typical nanocomposites to nanowire arrays and special core–shell-like morphologies, are explored in detail. The maximum energy product (BH)max, representing the quality indicator for permanent magnets, is investigated by taking into consideration various degrees of freedom, such as substitutions, geometry, size, shape, preparation, and processing conditions (annealing), volume fraction of magnetic phases, and interfaces. Promising strategies to overcome the present challenges (e.g., size control, coercivity–remanence trade-off, and optimization for large-scale production) are provided within the framework of future permanent magnet design. Full article
(This article belongs to the Special Issue Fine Tuning of Magnetic Iron Oxide Nanostructures)
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