Properties of Amorphous and Partially Crystalline Materials

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

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 3554

Special Issue Editor


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Guest Editor
Department of Physics, Faculty of Production Engineering and Materials Technology, Częstochowa University of Technology, Czestochowa, Poland
Interests: amorphous materials; nanoscience; properties; magnetism; titanium alloys; biomaterials; polymers; geopolymers; composites; method of production supercooled materials; foundry engineering; new technology; nanomaterials; annealing methods; materials science; physics; chemical engineering; engineering
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Special Issue Information

Dear Colleagues, 

Technological development is associated with the consumption of vast amounts of energy. Increases in environmental pollution and the greenhouse effect are driving the search for improvements (and savings) in the field of materials engineering. Therefore, modern construction and functional materials must feature increasingly improved mechanical and performance parameters. The development of these materials relies on the search for new, as well as the improvement of existing production and material processing methods for alloys, polymers, and composites.

An example of a class of modern materials is that of amorphous materials, nanomaterials, polymers or geopolymers—which are used as construction and even magnetic materials. The interest surrounding those materials is generated by their excellent mechanical properties, physical or chemical.

Often, such materials become a support or completely replace conventionally used materials. In the case of magnetic properties, the structure of the produced material is especially important.

Amorphous alloys, nanocrystalline materials, polymers, and composites all require continuous improvements, and their processing methods are constantly being enhanced. In practice, the mechanical and magnetic properties of the materials can be controlled by their thermal treatment and method of production. Both methods can lead to structural relaxation, which influences the specifics properties of these materials.

Composite materials and amorphous alloys represent an important target in the development of construction and functional materials. It is well known that composites should exhibit better properties than their individual constituents. On the other hand, amorphous alloys should have better properties than their crystalline counterparts with the same chemical composition.

Those materials find wide application in many areas of life; for example, the medicine, sports, and electronics industries.

This Special Issue on “Properties of Amorphous and Partially Crystalline Materials” concerns all aspects related with the properties and methods of production of those materials. We welcome articles related to this field. It is my pleasure to invite the submission of manuscripts for this Special Issue.

Prof. Marcin Nabiałek
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. Magnetochemistry 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 2700 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

  • Amorphous material 
  • Magnetism 
  • Magnetic properties 
  • Polymers 
  • Geopolymers 
  • Composites 
  • Mechanical properties 
  • New technology 
  • Unique properties 
  • Special properties 
  • Hardness 
  • Abrasion resistance 
  • Annealing process 
  • Improvement of properties 
  • Nanomaterial 
  • Structure

Published Papers (1 paper)

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Research

15 pages, 3339 KiB  
Article
Sodium-Based Chitosan Polymer Embedded with Copper Selenide (CuSe) Flexible Film for High Electromagnetic Interference (EMI) Shielding Efficiency
by Nurul Huda Osman, Nurul Najiha Mazu, Josephine Ying Chyi Liew, Muhammad Mahyiddin Ramli, Andrei Victor Sandu, Marcin Nabiałek, Mohammad Abdull Halim Mohd Abdull Majid and Hazeem Ikhwan Mazlan
Magnetochemistry 2021, 7(7), 102; https://doi.org/10.3390/magnetochemistry7070102 - 12 Jul 2021
Cited by 6 | Viewed by 2713
Abstract
Efficient shielding materials are extremely important to minimize the effect of electromagnetic interference. Currently, various composite materials are being investigated with different shielding efficiencies reported. In this paper, a flexible and free-standing sodium-based chitosan (CH/Na) polymer with copper selenide (CuSe) filler was prepared [...] Read more.
Efficient shielding materials are extremely important to minimize the effect of electromagnetic interference. Currently, various composite materials are being investigated with different shielding efficiencies reported. In this paper, a flexible and free-standing sodium-based chitosan (CH/Na) polymer with copper selenide (CuSe) filler was prepared for electromagnetic shielding. The CH/Na/CuSe polymer matrix was prepared via the direct casting technique at different wt% of CuSe, varying from 2 to 20 wt%. The polymer matrix was then characterised by using Fourier transform infrared (FTIR) spectroscopy to confirm the interaction between the CH/Na and CuSe. The XRD results revealed that the CH/Na/CuSe polymer was successfully formed. Improvement in the electrical conductivity was confirmed by an impedance spectroscopy measurement. The highest electrical conduction recorded was at 3.69 × 10−5 S/cm for CH/Na/CuSe polymer matrix with 20 wt% CuSe. An increase in total electromagnetic interference (EMI) shielding efficiency (SET) of up to 20 dB (99% EM power shield) was achieved, and it can be increased up to 34 dB (99.9% EM power shield) with the thickness of the polymer increased. Full article
(This article belongs to the Special Issue Properties of Amorphous and Partially Crystalline Materials)
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