Effect of La Doping on the Crystal Structure, Electric, Magnetic and Morphologic Properties of the BSCCO System

Rodrigues, Vivian Delmute; Souza, Gisele Aparecida; Carvalho, Cristiano; Zadorosny, Rafael

doi:10.1590/1980-5373-mr-2016-0754

Cited by 9 publications

(5 citation statements)

References 42 publications

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“…Also, the grains are randomly distributed and present a flat or a quasi twodimensional shape and By increasing the dopant content the sizes of the crystallite exhibit a more homogeneous distribution in consistent with V.D. Rodriguez et al study [33]. The connection good quality in La01 can decrease weak links and enhance the superconducting properties, while the porosity in the La03 sample may affect the critical temperature (Tc) value.…”

Section: Defect and Diffusion Forum Vol406supporting

confidence: 79%

Effect of Lanthanum Substitution on Structure and Modulation in Bi2Sr2-xLaxCaCu2O8+d (0≤x≤0.3) Superconducting Compound

Mimouni¹,

Mahboub²,

Mosbah

et al. 2021

DDF

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The effect of La substitution on the structure and its modulation in samples with a nominal composition of Bi2Sr2-xLaxCaCu2O8+d where 0≤x≤0.3 superconducting phase was investigated. The X-ray powder diffraction (XRPD) results showed an almost pure Bi-2212 phase, confirmed by the estimated amount of element concentration using dispersive energy X-ray spectroscopy (EDX). Scanning electron microscopy (SEM) micrographs showed a decrease of both crystallite size and connectivity when Lanthanum concentration increases. Le Bail refinement using the Jana2006 program gives a very good value of goodness of fit (GOF) factor. Also, the refinement reveals that for x=0.3 the orthorhombic cell transforms to the tetragonal one and the modulation vector q increases when increasing La concentration.

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Section: Defect and Diffusion Forum Vol406supporting

confidence: 79%

Effect of Lanthanum Substitution on Structure and Modulation in Bi2Sr2-xLaxCaCu2O8+d (0≤x≤0.3) Superconducting Compound

Mimouni¹,

Mahboub²,

Mosbah

et al. 2021

DDF

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“…For magnetic materials, in principle, the rare‐earth elements are pretty important compositions. [ 36–43 ] MXenes that contain the rare‐earth elements are thus worth further investigation.…”

Section: Figurementioning

confidence: 99%

Computational Study of a Novel 2D Ferromagnetic Metal: the Ce₂C Monolayer

Zhang

Pan

Yan

et al. 2020

Physica Rapid Research Ltrs

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Ferromagnetic (FM) 2D material is known as a FM film with atomic thickness, which serves as a key component in high density data storage and spintronic devices. [1,2] The realization of a long-range FM order can result in new magnetic applications. However, according to the Mermin-Wagner theorem, [3] magnetic order would be suppressed by thermal fluctuations in 2D systems. The large magnetic anisotropy energy (MAE) is demanded for 2D materials to preserve magnetic stability from thermal fluctuations. [4-9] Therefore, pursuing 2D FM materials holding large MAE is one of the key researches in the field of magnetic materials for the magnetic memory and storage devices. [10-13] Recently, a new family of 2D early transition metal carbides and nitrides with MXene-like layer structures has attracted a lot of attention due to their potential applications in nanoscience. For example, Be 2 C, [14] Nb 2 C, [15] Mo 2 C, [16] Al 2 C, [17] and Ta 2 C [15] may be used in the electronics or superconductivity; V 2 C [18] has a potential application in electrode materials; Ti 2 C [19,20] may be used in electrochemical energy storage; Mo 2 C [21] can be applied as thermoelectric materials; Ta 2 C [22,23] have high-temperature applications and higher oxidation resistance; Cu 2 Si can be used in fundamental science and gas sensing. [24-26] And especially, Mn 2 C, [13] Cr 2 C, [27] Fe 2 Si, [28] N 2 Y, [29] Fe 2 C, [30] MnB, [31] Cr 2 N, [32] Ni 2 N, [33] Zr 2 Si, [34] and Ti 2 B [35] have been predicted to have intrinsic magnetism for the potential applications in nanospintronics. It is clear that those researches mostly take focus on the transition metal elements, whereas the rare-earth elements have been studied rarely. For magnetic materials, in principle, the rare-earth elements are pretty important compositions. [36-43] MXenes that contain the rareearth elements are thus worth further investigation. In this work, based on comprehensive density functional theory (DFT) calculations, we predict an intrinsic metallic ferromagnet in the family of MXenes, namely, Ce 2 C monolayer. The 2D Ce 2 C crystal has a Ce─C─Ce sandwiched layered structure, which shares the same configuration as the 1T-MoS 2 sheet. The ab initio molecular dynamics (AIMD) simulations and phonon dispersions indicate that Ce 2 C has an excellent stability. Our computation suggests that Ce 2 C is an FM metal with an estimated Curie temperature (T c) up to 72 K and a large spin-orbit coupling (SOC) effect. The MAE of 2D Ce 2 C crystal is larger than those of pure metal, such as Fe, Co, and Ni. These advantages make the 2D Ce 2 C sheet a very promising candidate for spintronic nanodevices. All the calculations were performed under the framework of DFT as implemented in the Vienna ab initio simulation package (VASP). [44-47] The Perdew-Burke-Ernzerhof (PBE) [48] exchange-correlation functional and the projector augmented plane wave (PAW) [49] pseudopotential were adopted in this article to describe the electron-electron and ion-electron interactions. An energy cutoff of...

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“…Antara ciri istimewa sistem Bi(Pb)-Sr-Ca-Cu-O ialah ianya tidak toksik berbanding sistem Tl dan Hg. Ia juga mempunyai ketumpatan arus genting dan suhu genting yang tinggi berbanding sistem lain seperti bahan berasaskan Y dan La (Özçelik et al 2014;Rodrigues et al 2013). Bi(Pb)-Sr-Ca-Cu-O mempunyai struktur seperti perovskit yang multi-fasa (Gul et al 2006).…”

Section: Pengenalanunclassified

“…Terdapat beberapa laporan terkini mengenai kesan terhadap sifat superkonduktor apabila didopkan dengan zarah bersaiz nanometer dan mikrometer dengan komposisi tertentu seperti Özçelik et al 2014;Robaiah et al 2016;Rodrigues et al 2013;Yavuz et al 2016). Kajian terhadap kesan penambahan indium (In) juga telah dijalankan.…”

Section: Pengenalanunclassified

Sifat Elektrik dan Kerentanan Arus Ulang Alik Superkonduktor Bi(Pb)-Sr-Ca-Cu-O dengan Penambahan In2O3

Bakar¹,

Suib²,

Aizat³

et al. 2017

JSM

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Effect of La Doping on the Crystal Structure, Electric, Magnetic and Morphologic Properties of the BSCCO System

Cited by 9 publications

References 42 publications

Effect of Lanthanum Substitution on Structure and Modulation in Bi<sub>2</sub>Sr<sub>2-x</sub>La<sub>x</sub>CaCu<sub>2</sub>O<sub>8+d</sub> (0≤x≤0.3) Superconducting Compound

Effect of Lanthanum Substitution on Structure and Modulation in Bi<sub>2</sub>Sr<sub>2-x</sub>La<sub>x</sub>CaCu<sub>2</sub>O<sub>8+d</sub> (0≤x≤0.3) Superconducting Compound

Computational Study of a Novel 2D Ferromagnetic Metal: the Ce₂C Monolayer

Sifat Elektrik dan Kerentanan Arus Ulang Alik Superkonduktor Bi(Pb)-Sr-Ca-Cu-O dengan Penambahan In2O3

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Effect of La Doping on the Crystal Structure, Electric, Magnetic and Morphologic Properties of the BSCCO System

Cited by 9 publications

References 42 publications

Effect of Lanthanum Substitution on Structure and Modulation in Bi<sub>2</sub>Sr<sub>2-x</sub>La<sub>x</sub>CaCu<sub>2</sub>O<sub>8+d</sub> (0≤x≤0.3) Superconducting Compound

Effect of Lanthanum Substitution on Structure and Modulation in Bi<sub>2</sub>Sr<sub>2-x</sub>La<sub>x</sub>CaCu<sub>2</sub>O<sub>8+d</sub> (0≤x≤0.3) Superconducting Compound

Computational Study of a Novel 2D Ferromagnetic Metal: the Ce2C Monolayer

Sifat Elektrik dan Kerentanan Arus Ulang Alik Superkonduktor Bi(Pb)-Sr-Ca-Cu-O dengan Penambahan In2O3

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Computational Study of a Novel 2D Ferromagnetic Metal: the Ce₂C Monolayer