Thin films composed of MgAlO and (NiZn)FeO ([MA(100-)-NZF] films) were grown on fused SiO substrates by pulsed laser deposition. X-ray diffraction measurements revealed that the films were polycrystalline, and that their lattice constant varied linearly with composition, indicating the formation of a solid solution. The film with =60 was paramagnetic and those with ≥ 70 were ferromagnetic. The films had a transparency above 75% in the visible range, but the transparency decreased with the value. The optical band gaps were 2.95, 2.55, 2.30 and 1.89 eV for =20, 40, 60, 80 and 100, respectively. The Faraday rotation angle increased with in the visible range, and the film with =70 exhibited a value of 2000 degrees cm at 570 nm, which is comparable to the rotation angle of YFeO. Owing to their high transparency, which extends into the visible range, the [MA(100-)-NZF] films can be used in novel magneto-optical devices.
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http://dx.doi.org/10.1088/1468-6996/12/3/034408 | DOI Listing |
Acc Chem Res
January 2025
Mineralogical Society of Antwerp, Boterlaarbaan 225, 2100 Deurne, Belgium.
ConspectusWhile photochromic natural sodalites, an aluminosilicate mineral, were originally considered as curiosities, articles published in the past ten years have radically changed this perspective. It has been proven that their artificial synthesis was easy and allowed compositional tuning. Combined with simulations, it has been shown that a wide range of photochromic properties were achievable for synthetic sodalites (color, activation energy, reversibility, etc.
View Article and Find Full Text PDFHere we report a simple self-masking technique for fabricating bioinspired broadband antireflection coatings on both single-crystalline and multicrystalline silicon wafers with the assistance of a polyimide tape. Subwavelength-structured moth-eye nanopillars, which exhibit superior antireflection performance over a broad range of visible and near-IR wavelengths, can be patterned uniformly on the wafer surface by applying a chlorine-based reactive ion etching (RIE) process. The resulting random nanopillars show improved antireflection properties compared with ordered nanopillars templated by colloidal lithography under the same RIE conditions.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Zhengzhou University, College of Chemistry and Molecular Engineering, CHINA.
Time-dependent afterglow colored (TDAC) behavior differs from static afterglow by involving wavelength changes, enabling low-cost, high-level encryption and anti-counterfeiting. However, the existing carbon dot (CD)-based TDAC materials lack a clear mechanistic explanation and controllable wavelength changes, significantly hindering the progress of practical applications in this field. In this study, we synthesized CDs composites with customizable tunable TDAC wavelengths across the visible region.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
College of Science, Gansu Agricultural University, Lanzhou 730000, China.
Soluble starch/zinc oxide nanocomposites could be promising candidates for eco-friendly antimicrobial, food packaging, and a wide range of other utilization. In order to find a new way for the preparation of this kind of nanocomposites, an efficient and energy-saving reaction for the synthesis of soluble starch/zinc oxide nanocomposites has been investigated. The reaction was implemented in a solid state at room temperature without post-reaction calcination.
View Article and Find Full Text PDFClin Imaging
January 2025
Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, United States of America.
Purpose: To evaluate henna as a durable skin marker on various skin tones for sonographic targeting and to identify the shortest duration of henna application needed for practical clinical workflow.
Materials And Methods: Prospective study applying seven henna lines through ultrasound (US) gel on the forearms of 15 healthy participants equally represented across the validated six-color bar tool. Color bar categories 1-2, 3-4, and 5-6 were designated low, moderate, and high-melanin groups, respectively.
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