Ageing effect in nanocrystalline TiCx/C studied by EPR

Guskos, N.; Typek, J.; Bodziony, T.; Żołnierkiewicz, G.; Maryniak, M.; Biedunkiewicz, A.

doi:10.1016/j.jallcom.2008.03.029

Cited by 12 publications

(5 citation statements)

References 14 publications

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“…A highly anisotropic EPR spectrum in the 3400–3520 G range of magnetic field evidence the presence of titanium(III) paramagnetic centers. [ 39 ] The same peak position of Ti 3 CNT z and Ti 3 C 2 T z suggests a similar (valence) electronic structure of titanium in two different samples, but the concentration of Ti(III) in Ti 3 CNT z is 1.51 × 10 19 atom/g MXene , which is approximately twice the 7.05 × 10 18 atom/g MXene in Ti 3 C 2 T z . (see further discussions in the theory section)…”

Section: Resultsmentioning

confidence: 90%

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Sun¹,

Wang

Vlček

et al. 2020

Adv Materials Inter

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A comprehensive study on the prototype solid solution phase carbonitride MXene Ti3CN is conducted using nuclear magnetic resonance, electron spin resonance, total and quasi‐elastic neutron scattering, combined with density functional theory‐based electronic structure and molecular dynamic calculations. The combination of experiment and theory lead toward rational atomic structural models of Ti3CN. The remnant Al ions from the etching process significantly tune the interlayer spacing, distinct from the more typical MXene, Ti3C2, prepared similarly. Neutron scattering indicates the surface terminations of Ti3CN display high oxygen and fluorine concentrations and rather low hydroxyl and hydrogen concentrations. Calculations show that the structure including both the residual Al ions and mixed surface terminations give the best agreement with the measurements. The water molecules in Ti3CN are highly immobile, in strong contrast to those in Ti3C2. The analysis of the electronic structure suggests that the nitride MXene displays higher conductivity than the carbides. The absence of hydroxyl groups in terminations, the solid‐solution in the anion sites, the remnants within layers, and immobile water altogether make the carbonitrides a unique series in the MXene family, implying a further exploration of their exotic properties and applications in energy storage.

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Section: Resultsmentioning

confidence: 90%

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Sun¹,

Wang

Vlček

et al. 2020

Adv Materials Inter

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“…10 Resonance of conductivity electrons and Ti 3+ centers has been registered from TiC in the carbon matrix. 4,5,11 It was shown that the distribution of TiC particles over the C matrix and the methods of preparation of both TiC and carbon might inuence the properties of titanium carbide.…”

Section: Introductionmentioning

confidence: 99%

Structural transformation and nature of defects in titanium carbide treated in different redox atmospheres

et al. 2020

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“…However, we cannot rule out other possibilities such as high conductivity of the samples. Trivalent Ti 3+ complexes in nanocrystalline TiC/C systems were detected previously [10,11]. The addition of boron (B) to noncrystalline samples formed molybdenum-titaniumcarbide (Mo-Ti-C) system, significantly changed the ap- pearance and the temperature dependence of the FMR spectra of the Mo-Ti-C system, and increased the number of paramagnetic centers [10][11][12][13].…”

Section: Resultsmentioning

confidence: 99%

“…Our interest in magnetic study of nanostructure materials began with the study of TiC and TiN nanoparticles in different matrices [10][11][12][13]. Titanium carbide (TiC x ) and titanium nitride (TiN x ) are very important technological materials because being refractory materials they have gained much attention due to their extraordinary hardness.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Study of Nanocrystalline TiB₂, TiC, B₄C Powders Doped to AISI 316L Austenitic Steel

et al. 2017

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The investigations into ferromagnetic resonance and magnetic susceptibility of nanocrystalline TiB2, TiC, and B4C powders (Ti-B-C system) doped to AISI 316L austenitic steel with different amounts (3 vol.%, 5 vol.% and 7 vol.%) have been carried out. The ferromagnetic resonance spectra were recorded in the temperature range from helium up to room temperature. The three tested composite samples contain a number of magnetic phases in different proportions. They reveal a structure originating from several different complex magnetic centers. The composites revealed such magnetic phenomena as paramagnetism, (anti)ferromagnetism, and superparamagnetism. Magnetic susceptibility investigations supported the ferromagnetic resonance studies and their analysis. Magnetic properties of the TiB2, TiC, B4C powders doped to AISI steel may play important role in further possible applications of these composite systems.

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Ageing effect in nanocrystalline TiCx/C studied by EPR

Cited by 12 publications

References 14 publications

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Structural transformation and nature of defects in titanium carbide treated in different redox atmospheres

Magnetic Study of Nanocrystalline TiB₂, TiC, B₄C Powders Doped to AISI 316L Austenitic Steel

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Ageing effect in nanocrystalline TiCx/C studied by EPR

Cited by 12 publications

References 14 publications

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Multiscale and Multimodal Characterization of 2D Titanium Carbonitride MXene

Structural transformation and nature of defects in titanium carbide treated in different redox atmospheres

Magnetic Study of Nanocrystalline TiB2, TiC, B4C Powders Doped to AISI 316L Austenitic Steel

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Product

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Magnetic Study of Nanocrystalline TiB₂, TiC, B₄C Powders Doped to AISI 316L Austenitic Steel