Structural and mechanical properties of (Co/Mg) co-doped nano ZnO

Asikuzun, E.; Dönmez, Abdullah; Arda, L.; Cakiroglu, O.; Öztürk, O.; Akcan, D.; Tosun, Murat; Ataoglu, S.; Terzioğlu, C.

doi:10.1016/j.ceramint.2015.01.061

Cited by 37 publications

(13 citation statements)

References 28 publications

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“…The indentation tests primarily involve developing an impression on the surface of the material by penetrating a hard indenter at suitable applied load. The apparent hardness as measured from the load and the affected area under indentation is widely reported [13][14][15][16]. In most of the cases it has been observed that the hardness value changes with load.…”

Section: Introductionmentioning

confidence: 99%

“…It has been associated with different causes like work hardening, dislocation pinning, anisotropy, surface roughness, etc. and has been studied severely with many empirical or semi-empirical relations [12][13][14]17,18]. Presence of ISE causes inconvenience to material selection because the material cannot be expressed by a unique hardness number.…”

Section: Introductionmentioning

confidence: 99%

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Assessing hardness and fracture toughness in sintered zinc oxide ceramics through indentation technique

Roy¹

2015

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessing hardness and fracture toughness in sintered zinc oxide ceramics through indentation technique

Roy¹

2015

Materials Science and Engineering: A

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“…The corresponding crystalline diameter of Co-doped ZnO NFs increased by almost twice at a cobalt concentration of 9%, which declined as the cobalt content further increased. The increase of grain size at a certain concentration of doping cobalt was also revealed from previous studies (Lee et al 2002;Bahadur et al, 2010;Benramache et al, 2013;Gandhi et al, 2014;Asikuzun et al, 2015). Therefore, the previous study from (Zhao et al, 2015a) stating that cobalt doping does not significantly affect the lattice parameters and no changes to crystal structures is misleading within the synthesis of Co-doped ZnO NFs by the electrospinning machine.…”

Section: Structural Analysismentioning

confidence: 76%

“…Meanwhile, the crystalline diameter of cobalt-doped ZnO fibers was calculated using the Debye-Scherrer equation (Pongwan et al, 2012;Asikuzun et al, 2015):…”

Section: Structural Analysismentioning

confidence: 99%

Simple Fabrication and Characterization of Piezoelectric Nanogenerators from Cobalt-Doped Zinc Oxide Nanofibers

Suyitno

Hadi

Sahdan

et al. 2017

American Journal of Applied Sciences

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The ferromagnetic cobalt doped into Zinc Oxide (ZnO) crystals is a promising method for enhancing the performance of PiezoelectricBased Nano Generators (PENGs). The study reports the characterization and testing PENGs which simply fabricated from cobalt-doped ZnO nanofibers (NFs) synthesized by electro spinning machine. The electro spinning processes were conducted at a flow rate of 4 µL/min and at various cobalt concentrations followed by sintering at a temperature of 500°C. The X-Ray Diffraction (XRD) spectra demonstrate that the crystalline diameter of Co-doped ZnO NFs increased as the content of cobalt increased, up to a concentration of 9%. Meanwhile, the maximum output voltage and power density of PENGs with Co-doped ZnO NFs were 221.6 mV and 148.8 nW/cm 2 , respectively when the PENGs were subjected to a cyclic mechanical load of 0.5 kg. Therefore, PENGs fabricated from Co-doped ZnO NFs are challenging for the next generation of self-powered devices.

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“…These failures establish stress based on the difference in the physical and mechanical properties of the elements that connect temperature regime of the product of the nanoparticles. For these reasons, mechanical properties of nanoparticles are investigated to understand stress and to its extent [22][23][24]. Mechanical properties, including hardness, elastic modulus, yield strength, fracture toughness, brittleness index, and ductility are as important as parameters for industrial applications owing to the useful information on the strength and deformation properties of the materials [25].…”

Section: Introductionmentioning

confidence: 99%

Preparation, structural and micromechanical properties of (Al/Mg) co-doped ZnO nanoparticles by sol–gel process

Asikuzun

Öztürk

Arda

et al. 2015

J Mater Sci: Mater Electron

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Zn 0.90 Mg 0.10-x Al x O (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.10) nanoparticles were prepared by using sol-gel technique. The effects of Al and Mg doping on the structural and mechanical properties were investigated by using X-Ray diffraction (XRD), scanning electron microscopy (SEM) and digital micro-hardness tester, respectively. The grain size, a and c lattice parameters and morphology of nanoparticles were characterized by XRD and SEM measurements. The grain sizes of Al/Mg co-doped ZnO nanoparticles were also calculated by Scherrer-Warren equation. a and c lattice parameters are calculated from XRD peaks. According to the results it was observed that the grain sizes increased with increasing the Al doping. c lattice parameter partially decreased with Al doping. The experimental results of hardness measurements were analyzed using Meyer's law, proportional specimen resistance model, elastic/plastic deformation model, and Hays-Kendall (HK) approach. It was observed that HK approach is the most successful model for the micro-hardness analysis of Al/Mg co-doped ZnO materials.

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Structural and mechanical properties of (Co/Mg) co-doped nano ZnO

Cited by 37 publications

References 28 publications

Assessing hardness and fracture toughness in sintered zinc oxide ceramics through indentation technique

Assessing hardness and fracture toughness in sintered zinc oxide ceramics through indentation technique

Simple Fabrication and Characterization of Piezoelectric Nanogenerators from Cobalt-Doped Zinc Oxide Nanofibers

Preparation, structural and micromechanical properties of (Al/Mg) co-doped ZnO nanoparticles by sol–gel process

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