Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.5
2.7
Journals
Magnetochemistry
Special Issues
Magneto-Optical Ceramics
share announcement

Magneto-Optical Ceramics

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

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 10400

Special Issue Editor

Dr. Dmitry Permin

E-Mail
Guest Editor
Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences, 49 Tropinina Str., 603950 Nizhny Novgorod, Russia
Interests: transparent ceramics; rare earth oxides; nanopowders; combustion synthesis; sol-gel
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of ceramic technology has led to significant progress in the fabrication and improvement of the characteristics of magneto-optical polycrystalline materials through a base component of Faraday isolators (FIs) and Faraday rotators (FRs), which are widely used in advanced optical communication systems and high-power lasers for polarization control, optical isolation, and depolarization compensation. In this regard, many works have appeared that describe the preparation and properties of various classes of paramagnetic optical materials (such as garnets, sesquioxides, pyrochlores, etc.) owning superior properties compared to commercially available TGG single crystals.

This Special Issue of Magnetochemistry aims to publish a collection of research contributions illustrating the recent achievements in all aspects of the fabrication and investigation of highly transparent magneto-optical transparent ceramics used in high power Faraday isolators.

Dr. Dmitry Permin
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

  • Magneto-optical ceramics
  • Rare earth–based paramagnetics
  • Verdet constant
  • Faraday isolators
  • Nanopowders synthesis and sintering of magneto-optical ceramics
  • Mechanical and thermal properties of magneto-optical ceramics

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

14 pages, 4647 KiB  
Article
Pressureless Sintering of YIG Ceramics from Coprecipitated Nanopowders
by Yimin Yang, Xiaoying Li, Ziyu Liu, Dianjun Hu, Xin Liu, Penghui Chen, Feng Tian, Danyang Zhu, Lixuan Zhang and Jiang Li
Magnetochemistry 2021, 7(5), 56; https://doi.org/10.3390/magnetochemistry7050056 - 25 Apr 2021
Cited by 12 | Viewed by 2525
Abstract
Nanoparticles prepared by the coprecipitation method were used as raw materials to fabricate Y3Fe5O12 (YIG) ceramics by air pressureless sintering. The synthesized YIG precursor was calcinated at 900–1100 °C for 4 h in air. The influences of the [...] Read more.
Nanoparticles prepared by the coprecipitation method were used as raw materials to fabricate Y3Fe5O12 (YIG) ceramics by air pressureless sintering. The synthesized YIG precursor was calcinated at 900–1100 °C for 4 h in air. The influences of the calcination temperature on the phase and morphology of the nanopowders were investigated in detail. The powders calcined at 1000–1100 °C retained the pure YIG phase. YIG ceramics were fabricated by sintering at 1200–1400 °C for 10 h, and its densification behavior was studied. YIG ceramics prepared by air sintering at 1250 °C from powders calcinated at 1000 °C have the highest in-line transmittance in the range of 1000-3000 nm. When the sintering temperature exceeds 1300 °C, the secondary phase appears in the YIG ceramics, which may be due to the loss of oxygen during the high-temperature sintering process, resulting in the conversion of Fe3+ into Fe2+. Full article
(This article belongs to the Special Issue Magneto-Optical Ceramics)
►▼ Show Figures

Figure 1

13 pages, 5424 KiB  
Article
Fabrication of Dy2O3 Transparent Ceramics by Vacuum Sintering Using Precipitated Powders
by Dianjun Hu, Xin Liu, Ziyu Liu, Xiaoying Li, Feng Tian, Danyang Zhu, Zhaoxiang Yang, Lexiang Wu and Jiang Li
Magnetochemistry 2021, 7(1), 6; https://doi.org/10.3390/magnetochemistry7010006 - 28 Dec 2020
Cited by 16 | Viewed by 3053
Abstract
As a kind of promising material for a Faraday isolator used in the visible and near infrared range, Dy2O3 transparent ceramics were prepared by vacuum sintering from the nano-powders synthesized by the liquid precipitation method using ammonium hydrogen carbonate as [...] Read more.
As a kind of promising material for a Faraday isolator used in the visible and near infrared range, Dy2O3 transparent ceramics were prepared by vacuum sintering from the nano-powders synthesized by the liquid precipitation method using ammonium hydrogen carbonate as precipitant with no sintering aids. The synthesized precursor was calcinated at 950 °C–1150 °C for 4 h in air. The influences of the calcination temperature on the morphologies and phase composition of Dy2O3 powders were characterized. It is found that the Dy2O3 powder calcinated at 1000 °C for 4 h is superior for the fabrication of Dy2O3 ceramics. The Dy2O3 transparent ceramic sample prepared by vacuum sintering at 1850 °C for 10 h, and subsequently with air annealing at 1400 °C for 10 h, from the 1000 °C-calcined Dy2O3 powders, presents the best optical quality. The values of in-line transmittance of the optimal ceramic specimen with the thickness of 1.0 mm are 75.3% at 2000 nm and 67.9% at 633 nm. The Verdet constant of Dy2O3 ceramics was measured to be −325.3 ± 1.9 rad/(T·m) at 633 nm, about 2.4 times larger than that of TGG (Tb3Ga5O12) single crystals. Full article
(This article belongs to the Special Issue Magneto-Optical Ceramics)
►▼ Show Figures

Figure 1

7 pages, 2120 KiB  
Article
Fabrication and Magneto-Optical Property of (Dy0.7Y0.25La0.05)2O3 Transparent Ceramics by PLSH Technology
by Ding Zhou, Xiaohui Li, Tun Wang, Jiayue Xu, Zhanyong Wang, Ying Shi, Dmitry Permin and Stanislav S. Balabanov
Magnetochemistry 2020, 6(4), 70; https://doi.org/10.3390/magnetochemistry6040070 - 15 Dec 2020
Cited by 11 | Viewed by 1886
Abstract
(Dy0.7Y0.25La0.05)2O3 magneto-optical transparent ceramics were successfully fabricated by pressureless sintering in reductive H2 atmosphere (PLSH). The raw powder of (Dy0.7Y0.25La0.05)2O3 was synthesized by a [...] Read more.
(Dy0.7Y0.25La0.05)2O3 magneto-optical transparent ceramics were successfully fabricated by pressureless sintering in reductive H2 atmosphere (PLSH). The raw powder of (Dy0.7Y0.25La0.05)2O3 was synthesized by a modified self-propagating high-temperature synthesis (SHS) and sintered to transparent ceramics at 1400–1600 °C in a flowing H2 atmosphere, showing good sinterability of the as-synthesized raw powder. The magneto-optical Verdet constant of (Dy0.7Y0.25La0.05)2O3 transparent ceramics was measured to be −191.57 rad/(T·m) at a wavelength of 632.8 nm. In this magneto-optical material of (Dy0.7Y0.25La0.05)2O3, relative cheaper Dy and Y were used to replace Tb, and the low cost and good magneto-optical property showed the advantage of application on Faraday isolators (FIs) and Faraday rotators (FRs). Full article
(This article belongs to the Special Issue Magneto-Optical Ceramics)
►▼ Show Figures

Figure 1

10 pages, 5953 KiB  
Article
Fabrication and Magneto-Optical Properties of Yb2O3 Based Ceramics
by Dmitry A. Permin, Anastasia V. Novikova, Vitaly A. Koshkin, Stanislav S. Balabanov, Ilya L. Snetkov, Oleg V. Palashov and Ksenia E. Smetanina
Magnetochemistry 2020, 6(4), 63; https://doi.org/10.3390/magnetochemistry6040063 - 16 Nov 2020
Cited by 14 | Viewed by 2321
Abstract
Transparent ceramics based on ytterbium oxide have been successfully produced by vacuum sintering of self-propagating high-temperature synthesized powders with use of a La2O3 sintering aid. Phase composition and microstructure of the initial powders were studied by X-ray diffraction analysis and [...] Read more.
Transparent ceramics based on ytterbium oxide have been successfully produced by vacuum sintering of self-propagating high-temperature synthesized powders with use of a La2O3 sintering aid. Phase composition and microstructure of the initial powders were studied by X-ray diffraction analysis and scanning electron microscopy. It was found that addition of 5 mol.% of La2O3 does not cause formation of secondary phases in the Yb2O3 powders. The 4% La:Yb2O3 ceramics showed the best in-line transmittance of 73% at a wavelength of 2 μm among the studied samples. Dependence of the Verdet constant on wavelength was investigated in the range of 0.4–2 μm. The most promising finding is use of the obtained material as Faraday isolators in the wavelength region of ~1.5 μm, where there are no absorption bands, and the Verdet constant is 8.6 rad/(T*m). Full article
(This article belongs to the Special Issue Magneto-Optical Ceramics)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop