New Trends in Magnetic, Dielectric, Electrical, Optical, and Thermal Properties of Crystalline Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: 27 November 2024 | Viewed by 554

Special Issue Editors


E-Mail Website
Guest Editor
Department of Physics, University of Girona, Campus Montilivi s/n, 17003 Girona, Spain
Interests: powder metallurgy; structural analysis; thermal analysis; mechanical alloying; nanocrystalline
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
Interests: nanostructure; metallic and alloys; mechanical alloying; ECAP process; microstructure; magnetic property
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, there has been a lot of study and application of metal and alloy materials. A multitude of functional (magnetic, dielectric, electrical, optical, and thermal) and mechanical responses and characteristics have been identified and described through their microstructural and structural characterization (including anisotropy and texture). Novel techniques for manufacturing and examination of these crystalline materials have been reported. Meanwhile, their application in the relevant industries and performance evaluation were presented. Many factors, including fine particle size, shape, cap**, surfactant, do**, and defect structure, among many others, influence functional performance. Furthermore, such materials with specific chemical and physical properties for a certain application can be produced using a variety of chemical, physical, and mechanical procedures.

A general overview of the topic of crystalline materials, with potential extensions to the nanocrystalline field, is the focus of this Special Issue, “New Trends in Magnetic, Dielectric, Electrical, Optical, and Thermal Properties of Crystalline Materials”, which follows the previous Special Issue (https://mdpi.longhoe.net/journal/crystals/special_issues/516XCV9K09). These materials' applications, synthesis, simulation, and characterization, along with an examination of their structural, magnetic, dielectric, electrical, optical, and thermal properties, are all of interest.

Prof. Dr. Joan-Josep Suñol
Prof. Dr. Khitouni Mohamed
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at mdpi.longhoe.net 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. Crystals is an international peer-reviewed open access monthly 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 2100 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

  • metals and alloys
  • crystalline materials
  • nanocrystalline
  • structural properties
  • magnetic properties
  • dielectric properties
  • electrical properties
  • optical properties
  • thermal properties
  • powder metallurgy
  • mechanical alloying

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

14 pages, 3921 KiB  
Article
The Electrical Resistivity of Liquid Fe-16wt%S-2wt%Si at High Pressures and the Effect of S and Si on the Dynamo in the Ancient Vestan Core
by Erin M. Lenhart, Wenjun Yong and Richard A. Secco
Crystals 2024, 14(6), 565; https://doi.org/10.3390/cryst14060565 - 19 Jun 2024
Viewed by 412
Abstract
A critical component of predicting thermal convection and dynamo action in the cores of terrestrial planetary bodies is the adiabatic heat flux at the top of the core. Powders of Fe, FeS, and Fe-9wt%Si were mixed to imitate the core of Asteroid 4 [...] Read more.
A critical component of predicting thermal convection and dynamo action in the cores of terrestrial planetary bodies is the adiabatic heat flux at the top of the core. Powders of Fe, FeS, and Fe-9wt%Si were mixed to imitate the core of Asteroid 4 Vesta, which studies of HED meteorites indicate is comprised of 13–16wt%S and 1–2wt%Si. In a 1000-ton cubic anvil press, the voltage drop across an Fe-16wt%S-2wt%Si sample of 8–10 mm3 was measured at 2, 3, 4, and 5 GPa and ~300–2000 K. The resistivity of Fe-16wt%S-2wt%Si is 400 ± 50 μΩ·cm for 2–5 GPa for the complete liquid state. Using the Wiedemann–Franz Law, this gives an electronic thermal conductivity of 11 ± 1.5 W/m/K for 2–4 GPa at complete melting and an adiabatic heat flow of 55 ± 15 MW at the top of an early Fe-16wt%S-2wt%Si Vestan core. The 2 GPa boundary of the miscibility of Fe-16wt%S-2wt%Si is observed. The adiabatic heat flow through an Fe-16wt%S-2wt%Si core of variable size is discussed, as well as the resistivity of liquid Fe alloy at small planetary core conditions as a function of S and Si alloying composition. On the basis of previous studies on binary and ternary alloys of Fe with S and/or Si, we interpolate the separate effects of S and Si on the resistivity (and inversely on thermal conductivity and core adiabatic heat flow). Full article
Show Figures

Figure 1

Back to TopTop