Structural properties of MgxCd1-xO alloys

Paliwal, U.; Bredow, Thomas; Joshi, K. B.

doi:10.1063/1.4710360

Cited by 7 publications

(6 citation statements)

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“…In the same way, the Cd 1−x Mg x O phase appears with 9.7% and 20.4% of Cd nominal concentration in the growths at 500 °C and only with the 20.4% in the growths at 600 °C. Moreover, in all the samples with 20.4% of Cd precursor atomic concentration, additional diffractions of a Cd-rich phase have been detected (2θ 200 (CdO) = 38.286°, 2θ 220 (CdO) = 55.260°and 2θ 311 (CdO) = 65.912°1 9 ).…”

Section: ■ Results and Discussionmentioning

confidence: 91%

“…Fitting these data to a parabolic function, ,, and including the values of the lattice parameters corresponding to the MgO and the CdO already given, we got the following equation: where a MgO , a CdO , and a MgCdO are the lattice parameters of the MgO, CdO and the alloy respectively, x is the atomic concentration of Cd and b is the bowing parameter which is determined to be b = −0.4490 nm. As can be seen, the lattice parameter follows an upward bowing predicted in theoretical works. − In this way, it is worth to note that using linear Vegard’s law we are misestimating the composition of the alloy. Thus, Cd concentration would be overestimated while Mg concentration would be underestimated according to the results obtained in the studied ranges.…”

Section: Results and Discussionmentioning

confidence: 99%

“…If we focus our attention on the Mg 1−x Cd x O compound, we can see that the more we decrease the temperature, the more Cd 2+ ions are incorporated into the MgO lattice. The progressive incorporation of Cd content is indicated by the shift of the Mg 1−x Cd x O (111) diffraction peak, from 2θ MgO = 36.937°1 8 toward lower angles (2θ CdO = 33.002°1 9 ). This results in a shift of the lattice parameter from a MgO = 4.2112 Å 18 toward a CdO = 4.6953 Å.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…All the data are summarized in Table 3. Note that the Cd-rich phase of some samples is not included because it is not possible to determine its composition by using SEM-EDX because the morphology of the samples allows us to measure the composition of the Fitting these data to a parabolic function, 9,23,24 and including the values of the lattice parameters corresponding to the MgO and the CdO already given, we got the following equation:…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Recently, a review of the growth, optical and electronic properties and based devices of the ternary ZnCdO has been published . Regarding the alloy of CdO and MgO cubic binary oxides, in recent years, some theoretical papers were published showing the interesting properties that this alloy should present, among them should be emphasized the energetic stability of the rock-salt structure in the whole range of concentrations or the band gap energy tunability as a function of Mg content. − Since then, some experimental work has been carried out. Thus, isolated nanoparticles of the new ternary compound Cd 1– x Mg x O have been grown on r-sapphire substrates by using a spray pyrolysis technique in the whole range of Mg nominal content (0 ≤ x ≤ 1) .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Growth Temperature on the Structural and Morphological Properties of MgCdO Thin Films Grown by Metal Organic Chemical Vapor Deposition

Sallet

Hassani

Martinez-Tomas

et al. 2017

Crystal Growth & Design

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II−VI oxides ternary alloys have attracted considerable interest of the scientific community due to the possibility of modulating their interesting optoelectronic properties. Despite this interest, MgCdO has been poorly studied. In this work, by using the metal organic chemical vapor deposition method at low pressure, we have analyzed the synthesis of thin films of this alloy. Thus, for a fixed metal− organic precursors content, a change from Mg 1−x Cd x O (Mgrich phase) to Cd 1−x Mg x O (Cd-rich phase) has been induced when decreasing the growth temperature. The temperature range where both phases coexist has been particularly analyzed. Using X-ray diffraction analysis and scanning electron microscopy, a structural and morphological study of the samples has been carried out. In addition, the composition of the alloy has been measured by using energy dispersive X-ray analysis, and the behavior of the lattice parameter as a function of Cd content has been studied.

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Section: ■ Results and Discussionmentioning

confidence: 91%

Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Growth Temperature on the Structural and Morphological Properties of MgCdO Thin Films Grown by Metal Organic Chemical Vapor Deposition

Sallet

Hassani

Martinez-Tomas

et al. 2017

Crystal Growth & Design

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First-principles study of electronic and optical properties of CdxMg1 − xO alloys, TB-mBJ calculations

et al. 2023

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The magnesium and cadmium oxides (MgO, CdO) are widely used in the optoelectronic technology, for that raison it very interest subject of researches. In this work, the structural, elastic, electronic and optical properties of rock-salt CdxMg1-xO were investigated using both exchange correlations LDA and GGA-WC. The calculations were implemented using Full-Potential Linearized Augmented Plane Wave (FP-LAPW) method in the framework of the Density Functional Theory (DFT). For the electronic and optical properties, the calculations were performed using the Tran-Blaha-modified Beck Johnson potential (TB-mBJ). The lattice parameter have been reported for different cadmium concentrations x in the rocksalt structure, the calculated lattice parameter to be transmitted quasi-linearly from 4.257 A to 4.43 A for rock-salts MgO and rock-salts CdO respectively, For rs MgO and rs CdO, the obtained results are very acceptable with experimental results existing in the literature. The deviations between our results and experimental data is less than 1%. The estimated bandgap values to be 7.39eV for rs-MgO (rock salt) and 1.81eV for rs-CdO, the results deviate by less than 5% from experimental results. The energy bandgap (Eg) for x = 0, 0.25, 0.50, 0.75, and x = 1 varied quasi-linearly. Moreover, the optical parameters of CdxMg1-xO such as the dielectric function, the reflectivity, the refractive index, and the electron-loss-energy function have also been studied and discussed. Our findings results for rs MgO and rs CdO are also in good agreement with the experimental data, our results prove that the plasma frequency varied nonlaniary from 7.33eV for rs MgO to 3.03eV for rs CdO.

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Structural stability, mechanical, and optoelectronic properties of new stable phases for the ternary alloy Mg–Cd–O

Djezzar

Driss-Khodja

Amrani

2022

Computational Condensed Matter

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Structural properties of MgxCd1-xO alloys

Cited by 7 publications

References 0 publications

Effect of Growth Temperature on the Structural and Morphological Properties of MgCdO Thin Films Grown by Metal Organic Chemical Vapor Deposition

Effect of Growth Temperature on the Structural and Morphological Properties of MgCdO Thin Films Grown by Metal Organic Chemical Vapor Deposition

First-principles study of electronic and optical properties of CdxMg1 − xO alloys, TB-mBJ calculations

Structural stability, mechanical, and optoelectronic properties of new stable phases for the ternary alloy Mg–Cd–O

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