Results 71 to 80 of about 1,769 (198)

A Flexible Asymmetric Supercapacitor with High‐Performance and Long‐Lifetime: Fabrication of Nanoworm‐Like‐Structured Electrodes Based on Polypyrrole‐Thiosemicarbazone Complex

open access: yesSmall Methods, Volume 9, Issue 3, March 20, 2025.
An asymmetric supercapacitor including thiosemicarbazone exhibited a large operating potential of 1.8 V, allowing it to reach higher energy density values (56.5 Wh kg−1 at 1.0 Ag−1) and is stable up to 10 000 cycles. Abstract A thiosemicarbazone‐based iron(III) complex is prepared and used in the preparation of a supercapacitor electrode material. This
Elif Avcu Altıparmak   +2 more
wiley   +1 more source

Magnetic Mesoporous Calcium Sillicate/Chitosan Porous Scaffolds for Enhanced Bone Regeneration and Photothermal-Chemotherapy of Osteosarcoma

open access: yesScientific Reports, 2018
The development of multifunctional biomaterials to repair bone defects after neoplasm removal and inhibit tumor recurrence remained huge clinical challenges.
Fan Yang   +5 more
doaj   +1 more source

Preparation and Characterization of Barium and Strontium Hexaferrite Employing Recycled Millscale [PDF]

open access: yes, 2003
In this project work, permanent magnet barium/ strontium hexaferrite materials was prepared from millscale, using hematite derived from millscale by the Curie Temperature Separation Technique (CTST).
Azis, Raba'ah Syahidah
core  

Evidence of existence of metastable SrFe12O19 nanoparticles

open access: yesJournal of Magnetism and Magnetic Materials, 2011
Fil: Martinez Garcia, Ricardo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Houssay. Instituto de Tecnologias y Ciencias de la Ingenieria; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica.
Martinez Garcia, Ricardo   +3 more
openaire   +2 more sources

Enhanced Photocatalytic Activity of Polythiophene‐Modified Strontium Ferrite Nanohybrids for Crystal Violet Degradation Under Visible Light

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
Dye‐contaminated wastewater presents a serious environmental challenge, demanding efficient and sustainable treatment methods. Crystal violet (CV) is a water‐soluble, toxic, and persistent organic dye that poses serious health risks and contributes significantly to environmental pollution.
Shayista Gaffar   +3 more
wiley   +1 more source

Aligned Permanent Magnet Made in Seconds–An In Situ Diffraction Study

open access: yesAdvanced Electronic Materials, Volume 10, Issue 9, September 2024.
The formation of a strontium hexaferrite magnet from cold compacted goethite and strontium carbonate is studied using in situ synchrotron powder X‐ray diffraction (PXRD) with a 16‐ms time resolution. Texture with the c‐axis parallel to the pressing direction prevailed through the iron oxide phase transitions. Strontium hexaferrite formed within seconds
Amalie P. Laursen   +7 more
wiley   +1 more source

Patterned ferrimagnetic thin films of spinel ferrites obtained directly by laser irradiation [PDF]

open access: yes, 2013
Some spinel ferrites can be oxidized or transformed at moderate temperatures. Such modifications werecarried out on thin films of mixed cobalt copper ferrites and maghemite, by heating small regions with alow-power laser spot applied for about 100 ns ...
Bonningue, Corine   +3 more
core   +3 more sources

A Review: Active Tunable Terahertz Metamaterials

open access: yesAdvanced Photonics Research, Volume 5, Issue 7, July 2024.
GA: The diversity and practical significance of terahertz metamaterials have been rapidly developed in recent years, and the controllable properties are of great value. This review classifies the actively regulated terahertz metamaterials, divides them into four categories with external excitation as the classification standard, and presents some ...
Jining Li   +8 more
wiley   +1 more source

Strontium hexaferrite (SrFe12O19) for smart sensing: a review on synthesis strategies and functional applications

open access: yesDiscover Materials
SrFe12O19-based sensors face challenges related to synthesis control, structural stability, and performance optimization, which hinder their widespread application.
Priyanka Jagtap, Meena Laad
doaj   +1 more source

Effect of pH variation on magnetic properties of strontium hexaferrite nanoparticles synthesized by sol gel process [PDF]

open access: yes, 2015
A strontium ferrite (SrFe12O19) nanoparticle was prepared by sol gel auto combustion method at 800°C and 900°C and at various pH (pH 1, 3 and 5). The SrFe12O19 powder was characterized by using Thermogravimetric analyses (TGA), X-Ray Diffraction (XRD ...
Azis, Raba'ah Syahidah   +4 more
core  

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