High-temperature synthesis and unknown properties of M3Cr4(PO4)6, where M = Zn or Mg and a new solid solution Zn1.5Mg1.5Cr4(PO4)6

Blonska-Tabero, A.; Bosacka, M.; Filipek, E.; Piz, Mateusz; Kochmański, P.

doi:10.1007/s10973-019-09019-5

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…(b) High-temperature treatment (HTH) in a horizontal tube furnace PRC 50/170/M (Czylok, Jastrzębie-Zdrój, Poland) equipped with a stationary optical pyrometer MARATHON MM (Raytek, Wilmington, North Carolina, USA). Reagents weighed in suitable proportions were homogenized and calcined in the air atmosphere in the temperature range 1000-1500 • C. After each heating stage, the samples were gradually cooled in the furnace to room temperature by the method described, e.g., in [47][48][49][50].…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Basic Properties of Y1−xYbxVO4 Obtained by High-Energy Ball Milling and High-Temperature Treatment

Piz,

Filipek,

Klukowski

et al. 2023

Sustainability

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The main objective of this work was to experimentally confirm that a continuous, substitutional solid solution of a general formula Y1−xYbxVO4 is formed in the pseudo-binary system YVO4–YbVO4, and to investigate its basic unknown properties as a function of composition for 0.00 < x < 1.00. To date, such a solid solution has been obtained and characterized to a limited extent, but only for a few selected compositions. This solution was obtained by a high temperature and, for the first time, using mechanochemical methods. For the solution obtained by the high-energy ball-milling method, unknown physicochemical properties were established over its entire range of homogeneity. The solution was synthesized from mixtures of yttrium orthovanadate (V) with ytterbium (III) orthovanadate (V) of different compositions and investigated by XRD, IR, SEM, and UV-Vis(DRS) methods. It was found that Y1−xYbxVO4 crystallizes in a tetragonal system. The results confirmed that the solid solution Y1−xYbxVO4 has a structure of YVO4 and YbVO4, and its structure is composed of YbO6 and YO6 octahedrons and VO4 tetrahedrons. Moreover, if the parameter (x) in the solid solution Y1−xYbxVO4 increases, its crystalline lattice contracts and the value of the energy gap decreases. This solid solution is stable in the air atmosphere at least up to ~1500 °C. The estimated band gap for this solid solution indicates that it belongs to the semiconductors.

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Section: Methodsmentioning

confidence: 99%

Synthesis and Basic Properties of Y1−xYbxVO4 Obtained by High-Energy Ball Milling and High-Temperature Treatment

Piz,

Filipek,

Klukowski

et al. 2023

Sustainability

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“…Most of them are unsuitable for self-controlled hyperthermia applications because their Curie temperature (T C ) lies well above the therapeutic range [30]. For example, Fe 3 O 4 NPs stabilized by polyvinyl alcohol, dextran, hydrogel, and cationic liposomes and maghemite γ-Fe 2 O 3 NPs stabilized by ligand dextran [31][32][33][34][35] have a T C of 738 K [36] and 545 K [37], respectively, are non-toxic, and are extensively used for biomedical applications [38]. Such a significant value of T C makes these MNPs unsuitable for self-controlled hyperthermia applications.…”

Section: Introductionmentioning

confidence: 99%

Structural, Magnetic, and Magnetothermal Properties of Co100−xNix Nanoparticles for Self-Controlled Hyperthermia

et al. 2022

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In this study, the structural and magnetic properties of a series of functionalized Co100−xNix (x = 20, 30, 40, 50, 60, 80, 85) nanoparticles (NPs) were analyzed with the objective of attaining a high specific absorption rate (SAR). The magnetic nanoparticles (MNPs) obtained by ball milling at 1425 rpm lie in the range of 03–29 nm and are studied as potential candidates for magnetic fluid hyperthermia. Magnetic measurements show that all samples possess soft ferromagnetic properties with the reduction in the Curie temperature (TC) by Ni substitution in Co100−xNix alloys and by ball milling. The specific absorption rate (SAR) and specific loss power (SLP) obtained from magnetothermal measurements for powder and fluid samples lie in the range 4.4–83 W/g and 19–382 W/g, respectively, showing strong dependence on structural and magnetic properties. The SAR/SLP values as a function of the applied field at 425 kHz display a square dependence on the applied magnetic field below 165 Oe, which is expected for single domain ferromagnetic nanoparticles, but deviate from this at higher values of the applied field. We also obtained the effective anisotropy constant Keff for ball-milled nanoparticles at 1425 rpm for 200, 300, and 500 min. within the framework of linear response theory, showing strong dependence on average crystallite size. Additionally, the toxicity of the prepared nanoparticles in the form of percentage hemolysis was controlled with oleic acid.

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New FeVTaO6 compound—synthesis, structure and selected properties

Filipek,

Piz,

Dąbrowska

et al. 2023

J Mater Sci

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A new ceramic compound of the chemical formula FeVTaO6 was obtained in polycrystalline form, as a result of a high-temperature reaction between Fe2O3, Ta2O5 and VO2 mixed at the molar ratio 1:1:2 as well as in the reaction of equimolar mixture of FeTaO4 with VO2. The synthesis of this new compound has also been carried out by mechanochemical method realized by high-energy ball milling of some mixture of reactants. FeVTaO6, in both cases, was obtained under an atmosphere of deoxygenated argon. The new compound was characterized by XRD, DTA-TG, IR, SEM/EDX, TEM, XRF and UV–vis-DRS methods. Using X-ray powder diffraction, the lattice parameters of the unit cell and the parameters of the positioning of atoms (Rietveld analysis) were determined, and grain sizes were obtained on the basis of diffraction line broadening. The results showed that FeVTaO6 crystallizes in the tetragonal system with rutile-type structure. As shown in the DTA results, regardless of the synthesis method, FeVTaO6 is stable in argon atmosphere up to ~ 1225 °C and in air up to ~ 925 °C. Based on the UV–Vis-DR spectra, it was also established that the obtained compound is a semiconductor. The energy gap value determined for the compound obtained by the solid-state method is Eg ~ 1.75 eV, and for the compound obtained by the mechanochemical method Eg ~ 2.10 eV. Graphical abstract

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High-temperature synthesis and unknown properties of M3Cr4(PO4)6, where M = Zn or Mg and a new solid solution Zn1.5Mg1.5Cr4(PO4)6

Cited by 7 publications

References 25 publications

Synthesis and Basic Properties of Y1−xYbxVO4 Obtained by High-Energy Ball Milling and High-Temperature Treatment

Synthesis and Basic Properties of Y1−xYbxVO4 Obtained by High-Energy Ball Milling and High-Temperature Treatment

Structural, Magnetic, and Magnetothermal Properties of Co100−xNix Nanoparticles for Self-Controlled Hyperthermia

New FeVTaO6 compound—synthesis, structure and selected properties

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