Superconductivity and mechanical properties of SmBa2Cu3O7−δ added with nano-crystalline ZnFe2O4

Abdeen, W.; Tahan, Ayman El; Awad, R.; Aly, A. I. Abou; El-Maghraby, E.M.; Khalaf, A.

doi:10.1007/s00339-016-0101-0

Cited by 10 publications

(2 citation statements)

References 62 publications

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“…The scanning acoustic microscopy developed by Quate et al [3,4] is the one among the non-destructive characterization techniques widely used for determining both the elastic proprieties of a material and their different propagation speed such as longitudinal (V L ), transversal (V T ), and Rayleigh velocities (V R ). Since this technique has been used for characterizing various superconductor compounds [5][6][7][8][9][10], therefore, our study was devoted to carry out the modelling of the acoustic signature V(z) and the reflection coefficient R(θ), in case of porous and non-porous superconductor compound type Bi2212, in order to determine the evolution of the velocity of wave surfaces (Rayleigh velocity) as a function of temperature.…”

Section: Introductionmentioning

confidence: 99%

A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques

Sayoud¹,

Chouf²,

Boudour³

2018

Metallofiz. Noveishie Tekhnol.

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In the present work, the effect of the temperature on Rayleigh velocity V R of superconductor material type Bi2212 is studied, focusing on the modelling of both the reflection coefficient R(θ) and the acoustic signature V(z). Consequently, the study allows us to deduct the velocities of the acoustic waves of surface and volume, following their evolution as functions of temperature. The study is carried out in case of porous and non-porous superconductor material type Bi2212 in a temperature range from 10 to 295 K and with work frequency of 600 MHz. This modelling study is based on experimental results obtained on porous and non-porous Bi2212 superconducting materials in the temperature range of 10 to 295 K at a frequency of 600 MHz.

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Section: Introductionmentioning

confidence: 99%

A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques

Sayoud¹,

Chouf²,

Boudour³

2018

Metallofiz. Noveishie Tekhnol.

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“…SmBa 2 Cu 3 O 7-δ abbreviated as Sm-123 has been investigated due to its higher critical current density as compared with that of Y-123, both in low and high magnetic fields [8]. Therefore, Sm-123 is potentially attractive for high field power applications, static field cooling magnetization [9] as well as the synthesis of superconducting bulks, tapes, and wires [10]. Considerable research effort has been directed to the dissolution of YBaCuO superconductors in aqueous solutions [11][12].…”

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confidence: 99%

Corrosion Behavior of Mn2O3 Nanoparticles Doped Samarium Superconductor in 0.5 M HCl

Najjar¹,

Abdel‐Gaber²,

Awad³

2019

JNMES

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High performance single-domain (RE)Ba 2 Cu 3 O 7-δ where RE denoted rare earth element, such as Gd, Nd, Sm, Eu , Y, etc., have received technological and scientific attention since it is used for a wide range of large-scale utilization such as wind turbines, magnetic separation devices for water purification, in transportation as well as in power transmission [1]. Some applications of these new materials will be critically dependent on their stability in hostile aqueous environments which can limit their use in different environments, specifically in humid media [2]. Gao et al. [3] studied the effect of rare earth elements on the structure and electrochemical properties of La 0.63 R 0.2 Mg 0.17 Ni 3.1 Co 0.3 Al 0.1 alloy electrodes. They found that the substitution of La with Ce, Pr and Gd increases the electrochemical capacity and greatly improves hydrogen diffusion rate in the bulk as well as the charge transfer rate at the surface, and hence increase the rate of discharge-ability. Considerable research effort has been focused on the corrosion resistance of ceramic materials and composite oxides to determine the suitable conditions for different potential applications of these materials and find the protective measures in a corrosive medium. One of the functional methods to enhance the corrosion resistance of these materials is the addition of nanoparticles that became much attractive due to their effect on the microstructure., Singh et al. investigated the Mn-substitution in Mn x Fe 3-x O 4 (0 ≤ x ≤ 1.5) [4]. It was found that Mn improves significantly the electrocatalytic activity of this material specifically with 0.5 mol Mn-substitution. In addition, the deposition of MnO 2 on carbon nanotube (CNT) /Al show that this composite electrode was characterized by its capacitive behavior, displaying a much higher capacitance compared to MnO 2 / Ni electrodes [5]. Furthermore, Wang et al. [6] showed that the LiNi 0.5 Mn 1.5 O 4 cathode material shows the optimal overall electrochemical performance in view of the relatively lower discharge capacity at all rates. Nichelson et al. proved that a maximum ionic conductivity of 10 -6 S/cm at ambi-

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Recent Developments of Nanomaterials in Hydrogels: Characteristics, Influences, and Applications

et al. 2021

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In recent years, due to their good physical and chemical properties, nanocomposite hydrogels have shown great application potential in the fields of biomedicine, sensors, 3D printing, and water pollution control. Compared with pure polymer hydrogels, the superior performance of nanocomposite hydrogels is mainly due to the influence of nanomaterials on the internal structure and composition of the hydrogels. In this paper, starting from the basic properties required for practical applications of hydrogels, the influence of nanomaterials on the different properties of hydrogels is discussed. Meanwhile, this paper reviews the research status of nanocomposite hydrogels in different application fields, and emphasizes the challenges and development prospects of nanocomposite hydrogel applications.

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Superconductivity and mechanical properties of SmBa2Cu3O7−δ added with nano-crystalline ZnFe2O4

Cited by 10 publications

References 62 publications

A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques

A Study of Temperature Effect on the Rayleigh Velocity of Superconductor Material Type Bi2212 Using Acoustic Techniques

Corrosion Behavior of Mn2O3 Nanoparticles Doped Samarium Superconductor in 0.5 M HCl

Recent Developments of Nanomaterials in Hydrogels: Characteristics, Influences, and Applications

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