Preparation and Structure Properties of LaBa2Cu2O9, LaBa2CaCu3O12 and LaBa2Ca2Cu5O15 Perovskites

Jasim, Kareem Ali; Mahdi, Hind Abdulmajeed; Noori, Rafah Ismael; Abdulmajeed, Marwa Ayad

doi:10.3740/mrsk.2023.33.9.367

Cited by 2 publications

(1 citation statement)

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“…8,9) By removing the oxygen overlap between the Cu-O levels, it is possible to think of the Cu-O layers as deriving from the perovskite structure, whilst the rock salt structure is the source of the dielectric layer. [10][11][12] This current work discusses the temperature-dependent electrical characteristics and structural properties of the Hg 1-x Pb x Ba 2 Ca 1.8 Mg 0.2 Cu 3 O 8+δ samples and at concentrations x = 0. 0, 0.05, 0.10 and 0.20.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Analysis of the Impact of Partial Mercury Replacement with Lead on the Structural and Electrical Properties of the Hg1-xPbxBa2Ca2Cu3O8+δ Superconductor

Jasim,

Saleh,

Jassim

2024

Korean. J. Mater. Res.

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In this investigation, samples of the chemical (Hg 1-x Pb x Ba 2 Ca 1.8 Mg 0.2 Cu 3 O 8+δ ) were prepared utilizing a solid-state reaction technique with a range of lead concentrations (x = 0.0, 0.05, 0.10, and 0.20). Specimens were pressed at 8 tons per square centimeter and then prepared at 1,138 K in the furnace. The crystalline structure and surface topography of all samples were examined using X-ray diffraction (XRD) and atomic force microscopy (AFM). X-ray diffraction results showed that all of the prepared samples had a tetragonal crystal structure. Also, the results showed that when lead was partially replaced with mercury, an increase in the lead value impacted the phase ratio, and lattice parameter values. The AFM results likewise showed excellent crystalline consistency and remarkable homogeneity during processing. The electrical resistivity was calculated as a function of temperature, and the results showed that all samples had a contagious behavior, as the resistivity decreased with decreasing temperature. The critical temperature was calculated and found to change, from 102, 96, 107, and 119 K, when increasing the lead values in the samples from 0.0 to 0.05, 0.10, and 0.20, respectively.

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