Preparation and properties of ferromagnetic glass-ceramics and glass fibers in alkali-free and high-iron glass system

Liu, Jianan; Zhang, Meimei; Zhu, Chaofeng; Liu, Shujiang; Zhang, Yanfei

doi:10.1016/j.ceramint.2016.12.072

Cited by 12 publications

(4 citation statements)

References 23 publications

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“…This structure could be called ferrosilicate glass. The mechanism of the spontaneous crystallization behavior of magnetite in the studied glass samples could be explained from the viewpoint of the glass structure as shown in Figure …”

Section: Resultsmentioning

confidence: 99%

Synthesis and properties of ferrimagnetic glass‐ceramics and glass fibers derived from pyrite slag

Liu

Zhu

Zhang

et al. 2018

Int J Applied Ceramic Tech

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Ferrimagnetic nano‐crystal glass‐ceramics and glass fibers were prepared based on the ferrosilicate glass system of SiO2–Fe2O3–B2O3–Al2O3 using large amount of pyrite slag (PS) and small quantities of pure chemicals. Two different fabrication methods were employed, eg, annealing and fiber‐drawing method, without performing any nucleation and crystallization heat treatments. The influence of PS content on the magnetite spontaneous crystallization is investigated by the X‐ray diffraction, FTIR, SEM, and TEM. The X‐ray diffraction patterns show the presence of nanometric magnetite crystals in glass matrix. The ferrimagnetic glass fibers with a diameter of about 20 μm were one‐step drawn. The magnetic hysteresis loops of the glass‐ceramic and glass fiber samples were analyzed using a vibrating sample magnetometer (VSM). Electromagnetic parameters of samples were also examined.

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Section: Resultsmentioning

confidence: 99%

Synthesis and properties of ferrimagnetic glass‐ceramics and glass fibers derived from pyrite slag

Liu

Zhu

Zhang

et al. 2018

Int J Applied Ceramic Tech

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“…Then the glass melt was poured into room temperature water for rapid quenching to obtain ferrimagnetic glass–ceramic frit (M‐Q). This method is named as melt‐quenching method 29,30 . The mixtures of M‐Q and SrCO 3 were ground and mixed with a planetary ball mill using Al 2 O 3 spheres and alcohol at 800 rpm for 90 min.…”

Section: Glass Composition and Fabricationmentioning

confidence: 99%

“…This method is named as melt-quenching method. 29,30 The mixtures of M-Q and SrCO 3 were ground and mixed with a planetary ball mill using Al 2 O 3 spheres and alcohol at 800 rpm for 90 min.…”

Section: Glass Composition and Fabricationmentioning

confidence: 99%

Preparation and properties of ferrimagnetic glass–ceramic foams based on pyrite slag

Liu

Zhang

et al. 2022

Int J Applied Ceramic Tech

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By employing a melt-sintering method, we prepared a new type of ferrimagnetic glass-ceramic foam (FGCF) using ferrimagnetic glass-ceramic and foaming agent SrCO 3 . The ferrimagnetic glass-ceramics were fabricated based on pyrite slag by a melt-quenching method. The effects of foaming agent content, sintering temperature and time on microstructure, magnetic properties, microwave absorption performance, compressive strength, and thermal conductivity of the as-obtained FGCF were analyzed. This foaming process at 1100 • C for 40 min with 3-wt% SrCO 3 provided an FGCF with a bulk density of .693 g/cm 3 , a porosity of 63.60%, a specific saturation magnetic moment of 5.2 A m 2 /kg, a compressive strength of 2.61 MPa, a thermal conductivity of .241 W/(m K), and the calculated reflection loss of −12.1 dB for a layer thickness of 9 mm.

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“…For instance, magnetite, Fe 3 O 4 nanoparticles are formed in borosilicate and aluminoborosilicate glasses соntaining 17.5 mass % of Fe 2 O 3 together with low amounts of Cr 2 O 3 or P 2 O 5 [13,14]. In 30SiO 2 -8B 2 O 3 -xAl 2 O 3 -40Fe 2 O 3 -(22 − x) SrO glasses (x = 0, 3, 6 and 9 mass %), Fe 3 O 4 nanoparticles spontaneously arise, with magnetic parameters depending on x [15]. Fe 3 O 4 nanocrystals are also formed in glasses of molar compositions 33.3CaO-4.9Na 2 O-17.1Fe 2 O 3 -44.7B 2 O 3 [5] and (24-y)Na 2 O-yAl 2 O 3 -14B 2 O 3 -37SiO 2 -25Fe 2 O 3 with y = 8 to 16 [16], with size and properties depending on y. Fe 3 O 4 nanoparticles formed in the glass of molar composition 27.4CaO-42.8SiO 2 -6.1B 2 O 3 -23.7Fe 2 O 3 are surrounded with a nonmagnetic shell with distorted crystal structure [17].…”

Section: Introductionmentioning

confidence: 99%

Effect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses

Édelman

Kliava

Ivanova

et al. 2019

Journal of Non-Crystalline Solids

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A remarkable characteristic of borate glasses is the ability of forming magnetic nanoparticles at low doping with transition element oxides. We have studied structure and magnetic properties of iron oxide nanoparticles formed in borate glasses, in particular, concentration and temperature dependences of magnetic circular dichroism (MCD) and electron magnetic resonance (EMR) spectra. A series of glasses of molar composition 22.5K 2 O-22.5Al 2 O 3-55B 2 O 3 doped with 1.5 mass % of Fe 2 O 3 and different contents of Gd 2 O 3 from 0.1 to 1.0 mass % was prepared using a conventional melt quenching technique and subjected to an additional thermal treatment. The whole set of results allows to identify the predominant magnetic phase in these glasses as ε-Fe 2 O 3 nanoparticles, with a considerable part of iron ions substituted by gadolinium. Analysis and computer simulations of the EMR spectra allow separating the contribution of electron paramagnetic resonance of diluted iron ions and together with the temperature dependences of magnetization demonstrate a superparamagnetic character of the nanoparticle magnetism.

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Preparation and properties of ferromagnetic glass-ceramics and glass fibers in alkali-free and high-iron glass system

Cited by 12 publications

References 23 publications

Synthesis and properties of ferrimagnetic glass‐ceramics and glass fibers derived from pyrite slag

Synthesis and properties of ferrimagnetic glass‐ceramics and glass fibers derived from pyrite slag

Preparation and properties of ferrimagnetic glass–ceramic foams based on pyrite slag

Effect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses

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