A High-Energy Ball Milling as a Useful Technique for the Synthesis of CaCu3Ti4O12Electroceramics

Dulian, Piotr; Bąk, W.; Kajtoch, C.; Wieczorek-Ciurowa, K.

doi:10.12693/aphyspola.126.931

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Mechanochemical methods offer simplicity, one-step operation, solvent-free synthesis and/or modification of properties of advanced products. 252,253 The ternary oxide system CaO-TiO 2 -CuO is a very interesting material for application as capacitors. This material was investigated in detail for CaTiO 3 and its modification by substitution of calcium (Ca 1Àx Cu x TiO 3 , 0 r x r 0.75) and titanium sub-lattice (CaTi 1Àx Cu x O 3 , 0 r x r 0.4) by copper.…”

Section: Other Oxidic Systemsmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

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The aim of this review article on recent developments of mechanochemistry (nowadays established as a part of chemistry) is to provide a comprehensive overview of advances achieved in the field of atomistic processes, phase transformations, simple and multicomponent nanosystems and peculiarities of mechanochemical reactions. Industrial aspects with successful penetration into fields like materials engineering, heterogeneous catalysis and extractive metallurgy are also reviewed. The hallmarks of mechanochemistry include influencing reactivity of solids by the presence of solid-state defects, interphases and relaxation phenomena, enabling processes to take place under non-equilibrium conditions, creating a well-crystallized core of nanoparticles with disordered near-surface shell regions and performing simple dry time-convenient one-step syntheses. Underlying these hallmarks are technological consequences like preparing new nanomaterials with the desired properties or producing these materials in a reproducible way with high yield and under simple and easy operating conditions. The last but not least hallmark is enabling work under environmentally friendly and essentially waste-free conditions (822 references).

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Section: Other Oxidic Systemsmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

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“…The temperature dependence of real part of dielectric permittivity (ε') for BaTiO 3 /T, BaTiO 3 /Fe, and Ba-TiO 3 /Zr samples [21] 100-500nm and the lack of the high-temperature processing during synthesis eliminates the problem of chemical inhomogeneity of the material (Figure 16b). Grain boundary problem in ceramics CaCu 3 Ti 4 O 12 and their influence on its dielectric properties are widely discussed in the papers [62][63][64][65]. Dielectric properties of studied perovskite-related CaCu 3 Ti 4 O 12 compound synthesized under different conditions as a temperature relationship of the real component of dielectric permittivity (ε') and dielectric loss (tan δ) at the field frequency of 1 kHz are presented in Figure 17a and b, respectively.…”

Section: B Cacu 3 Ti 4 O 12mentioning

confidence: 99%

Solid-State Mechanochemical Syntheses of Perovskites

Dulian¹

2016

Perovskite Materials - Synthesis, Characterisation, Properties, and Applications

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The chapter presents the possibility of applying high-energy ball milling techniques to carry out the synthesis of ceramics with perovskite structure, thereby eliminating prolonged use of high temperatures in their preparation.On the examples of alkaline-earth metal perovskites, an influence of the most significant parameters of mechanochemical treatment on their forming process and product quality was illustrated. For the first time, it was done that the contamination of the product derived from the attrition of the grinding media and internal parts of the vial can constitute modifiers of the functional properties of produced electroceramics.Dielectric characteristics of mechanochemically produced materials as well as using hightemperature solid synthesis were compared.

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