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Crystals, Volume 13, Issue 3

March 2023 - 182 articles

Cover Story: Controlled oriented crystallization of glass surfaces is desired for high-precision applications, since the uppermost crystal layer significantly influences the properties of the glass ceramic. Surface crystallization of barium fresnoite glasses of the molar composition 2 BaO–TiO2–2.75 SiO2 at 825 °C in ambient/dry air, argon or vacuum led to the formation of fresnoite (Ba2TiSi2O8) crystals with a different size, morphology, and orientation. These changes correlated with changes in the humidity of the annealing atmosphere due to a decrease in viscosity. The least distorted crystals appear as depressions of up to 6 μm. This developed topography is changing the crystal orientation during growth relative to the flat glass surface and is therefore acting as a driving force for orientation. View this paper
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Articles (182)

  • Article
  • Open Access
32 Citations
4,387 Views
16 Pages

Complex Assessment of X-ray Diffraction in Crystals with Face-Centered Silicon Carbide Lattice

  • Igor I. Bosikov,
  • Nikita V. Martyushev,
  • Roman V. Klyuev,
  • Vadim S. Tynchenko,
  • Viktor A. Kukartsev,
  • Svetlana V. Eremeeva and
  • Antonina I. Karlina

19 March 2023

X-ray diffraction analysis is essential in studying stacking faults. Most of the techniques used for this purpose are based on theoretical studies. These studies suggest that the observed diffraction patterns are caused by random stacking faults in c...

  • Article
  • Open Access
4 Citations
3,012 Views
16 Pages

Drug Release from Carrier Systems Comprising Meloxicam Crystals Formed by Impregnation-Evaporation

  • Petr Zámostný,
  • Michal Drahozal,
  • Ondřej Švehla,
  • Simona Römerová and
  • Nikita Marinko

19 March 2023

The impregnation of poorly water-soluble drug onto the surface of a suitable pharmaceutical excipient, used as a hydrophilic carrier, can lead to the preparation of systems with improved dissolution properties due to the separation of drug crystal pa...

  • Article
  • Open Access
2,389 Views
16 Pages

A Study of the Temperature-Dependent Surface and Upper Critical Magnetic Fields in KFeSe and LaSrCuO Superconductors

  • Suppanyou Meakniti,
  • Pongkaew Udomsamuthirun,
  • Arpapong Changjan,
  • Grittichon Chanilkul and
  • Thitipong Kruaehong

19 March 2023

The critical magnetic field is one of the most interesting properties of superconductors. Thus, this study aimed to investigate the surface and upper critical magnetic fields of superconductors in Fe-based and cuprate superconductors as KFeSe and LaS...

  • Article
  • Open Access
2 Citations
2,264 Views
11 Pages

The Vertically Heteroepitaxial Structure for Lead-Free Piezoelectric K0.5Na0.5NbO3 Films

  • Zhe Wang,
  • Lingyan Wang,
  • Wei Ren,
  • Chao Li,
  • Yi Quan,
  • Kun Zheng and
  • Jian Zhuang

19 March 2023

The effect of epitaxial strain on the electrical properties of ferroelectric films has been widely investigated. However, this kind of strain is generally attributed to the substrate clamping constraints and is easily relaxed when the thickness of fi...

  • Review
  • Open Access
12 Citations
3,378 Views
13 Pages

A Review on the Progress of AlGaN Tunnel Homojunction Deep-Ultraviolet Light-Emitting Diodes

  • Kengo Nagata,
  • Taichi Matsubara,
  • Yoshiki Saito,
  • Keita Kataoka,
  • Tetsuo Narita,
  • Kayo Horibuchi,
  • Maki Kushimoto,
  • Shigekazu Tomai,
  • Satoshi Katsumata and
  • Yoshio Honda
  • + 2 authors

19 March 2023

Conventional deep-ultraviolet (UV) light-emitting diodes (LEDs) based on AlGaN crystals have extremely low light-emission efficiencies due to the absorption in p-type GaN anode contacts. UV-light-transparent anode structures are considered as one of...

  • Article
  • Open Access
3 Citations
2,292 Views
13 Pages

Wear and Corrosion Behavior of Cold-Sprayed Cu-10Sn Coatings

  • Ismail Ozdemir,
  • Bahattin Bulbul,
  • Thomas Grund and
  • Thomas Lampke

18 March 2023

Gas-atomized Cu-10Sn powders as a potential substitute for sintered bronze layers are usually employed in plain-bearing shells produced by cold spray (CS) processes on steel substrates (AISI 1010). In this study, the effective thickness, i.e., approx...

  • Article
  • Open Access
8 Citations
2,383 Views
14 Pages

18 March 2023

The current work seeks to discover and choose the proper friction stir processing (FSP) settings for aluminum alloy 7075 surface composites enhanced by adding three unique nanoparticles of titanium dioxide (TiO2), B4C, and graphene for superior perfo...

  • Article
  • Open Access
1 Citations
2,058 Views
11 Pages

18 March 2023

Intramolecular electronic communication between electrochemically active groups connected by a bridging moiety can be modified through small changes in the spatial disposition of the redox active moieties and/or by the nature of the central core. In...

  • Article
  • Open Access
4 Citations
3,721 Views
12 Pages

17 March 2023

Continual development of nickel-based superalloys for single-crystal turbine applications has pushed their operating temperatures higher and higher, most notably through the addition of rhenium. However, this has left them susceptible to the precipit...

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Crystals - ISSN 2073-4352Creative Common CC BY license