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Crystals, Volume 13, Issue 7

July 2023 - 169 articles

Cover Story: It is crucial to gain insight into how the mechanical properties of Co-based superalloys can be optimized by understanding the impact of γ′ and secondary-phase fractions. To achieve this, a series of Co-Al-W-Ta model alloys were carefully designed, with compositions aligned along the γ/γ′ tie-line, resulting in γ′ volume fractions ranging from 0% to 70% at a temperature of 900 °C. Notably, an enhanced γ′ volume fraction consistently led to an increase in both high-temperature yield strength and creep performance. However, alloys containing higher γ′ volume fractions and additional secondary phases experienced a substantial reduction in their creep properties. View this paper
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Articles (169)

  • Article
  • Open Access
1 Citations
2,225 Views
14 Pages
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Excitation Density Effects in the Luminescence Yield and Kinetics of MAPbBr3 Single Crystals

  • Andrey N. Belsky,
  • Nikita A. Fedorov,
  • Ivan A. Frolov,
  • Irina A. Kamenskikh,
  • Patrick Martin,
  • Elizaveta D. Rubtsova,
  • Igor N. Shpinkov,
  • Dmitry A. Spassky,
  • Andrey N. Vasil’ev and
  • Boris I. Zadneprovsky
Crystals2023, 13(7), 1142;https://doi.org/10.3390/cryst13071142

22 July 2023

The luminescent Z-scan technique with time resolution is applied to the study of the luminescence properties of CH3NH3PbBr3 single crystals representative of the family of hybrid organic–inorganic lead perovskites successfully applied recently...

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  • Article
  • Open Access
5 Citations
3,964 Views
10 Pages
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Combining UV-Vis and Resonance Raman Spectroscopy to Characterize Molecular Aggregation

  • Valentina Sesti,
  • Micol D’Antonio,
  • Andrea Lucotti,
  • Paola Moretti,
  • Rossella Castagna,
  • Chiara Bertarelli and
  • Matteo Tommasini
Crystals2023, 13(7), 1141;https://doi.org/10.3390/cryst13071141

22 July 2023

In this work, we use UV-Vis and Raman spectroscopy to correlate the intensity of selected transitions to the onset of aggregation phenomena. Through TDDFT calculations, we rationalize the formation of H-aggregates and their influence on the observed...

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  • Review
  • Open Access
4 Citations
5,809 Views
27 Pages
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Next-Generation Quantum Materials for Thermoelectric Energy Conversion

  • Shiva Kumar Singh,
  • Julian Munevar,
  • Letície Mendonça-Ferreira and
  • Marcos A. Avila
Crystals2023, 13(7), 1139;https://doi.org/10.3390/cryst13071139

21 July 2023

This review presents the recent advances in the search for thermoelectric (TE) materials, mostly among intermetallic compounds and in the enhancement of their TE performance. Herein, contemporary approaches towards improving the efficiency of heat&nd...

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  • Article
  • Open Access
4 Citations
2,804 Views
12 Pages
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Cold Sintering Isomagnetic Dielectric NaCl-Nickel Zinc Ferrite Composite Ceramics

  • Jiuyuan Han,
  • Mengjiao Chi,
  • Liu Yang,
  • Bing Liu,
  • Minmin Mao,
  • Hadi Barzegar Bafrooei,
  • Zhongyan Ma,
  • Yingjie Ren,
  • Feng Shi and
  • Ehsan Taheri-Nassaj
  • + 2 authors
Crystals2023, 13(7), 1140;https://doi.org/10.3390/cryst13071140

21 July 2023

In this study, dense composites of xNaCl-(1−x)Ni0.5Zn0.5Fe2O4 (referred to as NaCl-NZO) and xH3BO3-(0.8−x)Ni0.5Zn0.5Fe2O4-0.2NaCl (referred to as HB-NZO-NaCl) were prepared using the cold sintering process. The objective was to investigate the cold s...

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  • Article
  • Open Access
3 Citations
2,888 Views
20 Pages
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Effect of Microchemistry Elements in Relation of Laser Welding Parameters on the Morphology 304 Stainless Steel Welds Using Response Surface Methodology

  • Kamel Touileb,
  • Elawady Attia,
  • Rachid Djoudjou,
  • Abdejlil Chihaoui Hedhibi,
  • Abdallah Benselama,
  • Albaijan Ibrahim and
  • Mohamed M. Z. Ahmed
Crystals2023, 13(7), 1138;https://doi.org/10.3390/cryst13071138

21 July 2023

Small differences in the contents of surface active elements can change flow direction and thus heat transfer, even for different batches of a given alloy. This study aims to determine the effects of sulfur on weld bead morphology in the laser proces...

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  • Article
  • Open Access
2 Citations
1,794 Views
13 Pages
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Anomalous Ferromagnetic Phase in the Gd1−xErxB4 Series: Crystal Growth, Thermal, and Magnetic Properties

  • Sueli H. Masunaga,
  • Vagner B. Barbeta,
  • Fábio Abud,
  • Milton S. Torikachvili and
  • Renato F. Jardim
Crystals2023, 13(7), 1137;https://doi.org/10.3390/cryst13071137

21 July 2023

Rare-earth tetraborides RB4 are of great interest due to the occurrence of geometric magnetic frustration and corresponding unusual magnetic properties. While the Gd3+ spins in GdB4 align along the ab plane, Er3+ spins in the isomorphic ErB4 are conf...

Full Article
  • Article
  • Open Access
3 Citations
3,306 Views
11 Pages
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High-Conductivity MXene Film-Based Millimeter Wave Antenna for 5G Applications

  • Jiannan Guo,
  • Yunfa Si,
  • Rongguo Song,
  • Haoran Zu,
  • Yitong Xin,
  • Dong Ye,
  • Ming Xu,
  • Bao-Wen Li and
  • Daping He
Crystals2023, 13(7), 1136;https://doi.org/10.3390/cryst13071136

21 July 2023

Millimeter wave antennas have the advantage of high directivity, miniaturization, high resolution and data transfer speed, wide bandwidth, and lower latency. In this work, a millimeter wave planar array antenna (PAA) with the characteristics of wideb...

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  • Article
  • Open Access
2,711 Views
9 Pages
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Interaction between the L-Ascorbic Acid and the HO2 Hydroperoxyl Radical: An Ab Initio Study

  • Iván Carrillo Díaz,
  • Ali Fransuani Jiménez González,
  • Juan Manuel Ramírez-de-Arellano and
  • Luis Fernando Magaña
Crystals2023, 13(7), 1135;https://doi.org/10.3390/cryst13071135

20 July 2023

We studied the interaction between the L-ascorbic acid C6H8O6 and the HO2 hydroperoxyl radical, using DFT ab initio methods. The purpose of this study is to explore whether the L-ascorbic acid would be able to interact with and possibly reduce the hy...

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  • Article
  • Open Access
2 Citations
3,498 Views
15 Pages
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Development of the Forming Limit Diagram for AA6016-T4 at Room Temperature Using Uniaxial Tension of Notched Samples and a Biaxial Test

  • Ahmed Elsayed,
  • Diego Gonzalez and
  • Evgenia Yakushina
Crystals2023, 13(7), 1134;https://doi.org/10.3390/cryst13071134

20 July 2023

Within the framework of the formability limit assessment in sheet metal forming, testing of notched tensile samples coupled with digital image correlation (DIC) has been analysed as an alternative to overcome the implications of Nakajima testing in r...

Full Article
  • Article
  • Open Access
2 Citations
2,559 Views
18 Pages
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Structure, Conformation and Contact Analyses of Six Aromatic Diamide Diesters

  • Islam Ali Osman,
  • Vickie McKee,
  • Christian Jelsch and
  • John F. Gallagher
Crystals2023, 13(7), 1133;https://doi.org/10.3390/cryst13071133

20 July 2023

Six meta-substituted isophthalamide diesters (DxE) and pyridinedicarboxamides (PxE) are reported with spectroscopic and crystal structure analyses (D = meta-C6H4; P = meta-pyridine; xE = 2-/3-/4-ethyl ester substitution). Comparisons are made between...

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