Comparative study of nano-sized particles CoFe2O4 effects on superconducting properties of Y-123 and Y-358

Slimani, Y.; Hannachi, E.; Salem, M. K.; Hamrita, A.; Varılcı, A.; Dachraoui, Walid; Salem, M. Ben; Azzouz, F. Ben

doi:10.1016/j.physb.2014.06.003

Cited by 40 publications

(11 citation statements)

References 33 publications

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“…Figure 1a, b shows respectively the XRD powder patterns of Y-123 and Y-358 samples added with different amounts of CoFe 2 O 4 ranging from 0.0 to 0.5 wt.%. Details on the structural changes associated with the high concentration of nanosized CoFe 2 O 4 addition have been reported elsewhere [8]. For all CoFe 2 O 4 -added samples, the X-ray Refinement of the X-ray diffraction data shows that the a and b parameters of Y-358 and Y-123 are very close; however, the c parameter of Y-358 is almost three times that of Y-123 [5,8].…”

Section: Methodsmentioning

confidence: 73%

“…Details on the structural changes associated with the high concentration of nanosized CoFe 2 O 4 addition have been reported elsewhere [8]. For all CoFe 2 O 4 -added samples, the X-ray Refinement of the X-ray diffraction data shows that the a and b parameters of Y-358 and Y-123 are very close; however, the c parameter of Y-358 is almost three times that of Y-123 [5,8]. The insertion of CoFe 2 O 4 results in a slight increase of a and c and a decrease of b cell parameters (insets of Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Due to the structural resemblance and similarity of the superconducting transition temperature of Y-123 and Y-358, one can encounter some difficulties to distinguish between these compounds. Recently, we have reported a systematic study on the effect of nano-sized CoFe 2 O 4 particles (10 nm) addition on the structure, microstructure and the normal-state transport properties of polycrystalline Y-123 and Y-358 [8], and we have shown that these compounds exhibit a dissimilar behavior. The CoFe 2 O 4 nanoparticles modify the electrical behavior of samples from metallic to insulating with a much lower CoFe 2 O 4 concentration in the Y-358 structure compared to the Y-123.…”

Section: Introductionmentioning

confidence: 99%

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Excess Conductivity Study in Nano-CoFe2O4-Added YBa2Cu3O7−d and Y3Ba5Cu8O18±x Superconductors

Slimani

Hannachi

Salem

et al. 2015

J Supercond Nov Magn

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We report electrical conductivity fluctuation analyses on YBa 2 Cu 3 O 7−d (noted Y-123) and Y 3 Ba 5 Cu 8 O 18±x (noted Y-358) polycrystalline samples added with nano-sized ferrite cobalt (CoFe 2 O 4 ) particles. Phases and microstructure have been systematically investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results reveal that the lattice parameters change for both Y-123 and Y-358 phases. SEM observations show that the grain size is reduced with increasing the content of CoFe 2 O 4 in the yttrium-based superconductor (YBCO) matrix The temperature dependence of electrical resistivity ρ(T ) has been measured and the effect of addition of magnetic CoFe 2 O 4 in the paraconductivity region has been reported. The thermodynamic fluctuation is obtained by analyzing the excess of conductivity on the basis of the Aslamazov-Larkin theory. The coherence length, the effective layer thickness, critical magnetic fields, and critical current density are estimated. Superconducting parameters are affected by the nanoparticle addition, and results are discussed in relevance to the structural and microstructure differences between Y-123 and Y-358.

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Section: Methodsmentioning

confidence: 73%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Excess Conductivity Study in Nano-CoFe2O4-Added YBa2Cu3O7−d and Y3Ba5Cu8O18±x Superconductors

Slimani

Hannachi

Salem

et al. 2015

J Supercond Nov Magn

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“…It has been 34 years since the discovery of high temperature superconductivity by Bednorz and Müller [119] and many thousands of studies have taken place but there is still no unambiguous explanation of superconductivity and related phenomena (i.e., pseudo gap state, linear dependence of electrical resistance) [140][141][142][143][144][145][146][147][148][149]. Although LnBa 2 Cu 3 O 7-δ are very important perovskite-related materials (crystal structure is a combination of perovskite and rock salt units) with superconducting properties (high critical temperatures) [140][141][142][143][144][145][146][147][148][149] they will not be reviewed in detail here as the focus is on materials with fast oxygen self-diffusion. Oxygen vacancies (in the Cu-O planes) and oxygen vacancy diffusion in these materials is of importance as it can impact the structure and superconducting properties [140][141][142][143][144][145][146][147][148][149].…”

Section: Others Perovskite Systemsmentioning

confidence: 99%

Self-Diffusion in Perovskite and Perovskite Related Oxides: Insights from Modelling

et al. 2020

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Perovskite and perovskite related oxides are important materials with applications ranging from solid oxide fuel cells, electronics, batteries and high temperature superconductors. The investigation of physical properties at the atomic scale such as self-diffusion is important to further improve and/or miniaturize electronic or energy related devices. In the present review we examine the oxygen self-diffusion and defect processes in perovskite and perovskite related oxides. This contribution is not meant to be an exhaustive review of the literature but rather aims to highlight the important mechanisms and ways to tune self-diffusion in this important class of energy materials.

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“…Addition of ZnFe 2 O 4 nanoparticles in Gd-Ba 2 Cu 3 O 7-δ enhanced superconducting parameters up to a certain optimal concentration level [18] . CoFe 2 O 4 nanoparticles addition in YBa 2 Cu 3 O 7 (Y-123) and Y 3 Ba 5 Cu 8 O 18 (Y-358) highly suppressed the superconducting parameters as well as grain size [19] . The critical current density J c of Bi-2223 superconductor was increased after inclusion NiFe 2 O 4 nanoparticles [20] .…”

Section: Introductionmentioning

confidence: 99%

Superconducting Properties of (MnFe2O4)x/CuTl-1223 Composites

Mumtaz¹

2017

JNMS

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The effects of nanometer size MnFe 2 O 4 particles addition on different properties of (Cu 0.5 Tl 0.5 ) Ba 2 Ca 2 Cu 3 O 10−δ (CuTl-1223) superconducting phase was studied. MnFe 2 O 4 nanoparticles were synthesized by sol-gel method and were added to CuTl-1223 superconducting phase synthesized by solid-state reaction to get (MnFe 2 O 4 ) x / CuTl-1223; x = 0 ~ 2.0 wt. % composites. The effects of these magnetic nanoparticles on structural, morphological and superconducting transport properties of host CuTl-1223 phase were investigated via X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-rays (EDX) spectroscopy, Fourier transform infrared (FTIR) spectroscopy and Four-Probe Resistivity (ρ) measurements. Inclusion of these nanoparticles exhibited no change in crystal structure of host CuTl-1223 superconducting phase. Suppression of superconducting properties was probably due to enhanced effective scattering of carriers across magnetic natured MnFe 2 O 4 nanoparticles residing at the grain-boundaries of CuTl-1223 superconductor.

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Comparative study of nano-sized particles CoFe2O4 effects on superconducting properties of Y-123 and Y-358

Cited by 40 publications

References 33 publications

Excess Conductivity Study in Nano-CoFe2O4-Added YBa2Cu3O7−d and Y3Ba5Cu8O18±x Superconductors

Excess Conductivity Study in Nano-CoFe2O4-Added YBa2Cu3O7−d and Y3Ba5Cu8O18±x Superconductors

Self-Diffusion in Perovskite and Perovskite Related Oxides: Insights from Modelling

Superconducting Properties of (MnFe2O4)x/CuTl-1223 Composites

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