Magnetic Properties and Critical Behaviour of the B-spinel ZnxCd1-xCr2S4Compounds (0.2 ≤x≤ 0.5)

Hamedoun, M.; Bakkali, F.Z.; Cherriet, Y.; Mahjoubi, F.; Hourmatallah, A.

doi:10.1238/physica.regular.064a00168

Cited by 2 publications

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References 16 publications

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“…Under laboratory conditions, dusty plasma is widely studied in direct current (DC), radio frequency (RF) and microwave (MW) discharges due to their importance in fields like plasma chemistry, thin film deposition, plasma etching, and so on [9][10][11][12]. The hydrodynamic models are usually employed to describe these discharge dusty plasmas, in which the electrons and ions are assumed to be in Maxwellian equilibrium [5,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Theoretical research on the transport and ionization rate coefficients in glow discharge dusty plasma

Liang

2019

Plasma Sci. Technol.

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The electron kinetic model for investigating the transport and ionization rate coefficients of argon glow discharge dusty plasma is developed from the Boltzmann equation. Both of the electronneutral and electron-dust collisions are considered as collision terms in the kinetic equation. The kinetic equation is simplified by employing the local approximation and nonlocal approach under the same discharge conditions, and the corresponding simplified kinetic equations are known as local and nonlocal kinetic equations respectively. Then the electron energy distribution function (EEDF) is obtained by numerically solving the local and nonlocal kinetic equations and the dust charging equations simultaneously. Based on the obtained EEDFs, the effective electron temperature, electron mobility, electron diffusion coefficient and ionization rate coefficient are calculated for different discharge conditions. It is shown that the EEDFs calculated from the local kinetic model clearly differ from the nonlocal EEDFs and both the local and nonlocal EEDFs are also clearly different with Maxwellian distributions. The appearance of dust particles results in an obvious decrease of high energy electrons and increase of low energy electrons when axial electric field is low. With the increase of axial electric field, the influence of dust particles on the EEDFs becomes smaller. The electron mobility and diffusion coefficients calculated on the basis of local and nonlocal EEDFs do not differ greatly to the dust-free ones. While, when dust density n d =10 6 cm −3 , the electron mobility increases obviously compared with the dust-free results at low axial electric field and decreases with the increasing axial electric field until they are close to the dust-free ones. Meanwhile, electron diffusion coefficients for dusty case become smaller and decrease with the increasing axial electric field. The ionization rate coefficients decrease when dust particles are introduced and they approach the dust-free results gradually with the increasing axial electric field.

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Section: Introductionmentioning

confidence: 99%

Theoretical research on the transport and ionization rate coefficients in glow discharge dusty plasma

Liang

2019

Plasma Sci. Technol.

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Influence of a nonmagnetic dilution on the magnetic properties of a ZnxCd1−xCr2S4 system by means of microwave magnetic resonance

Mendoza

Guzmán

Calderón

2005

Journal of Applied Physics

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The influence of a nonmagnetic dilution on the magnetic properties of a Zn x Cd 1−x Cr 2 S 4 system ͑0.1Ͻ x Ͻ 0.9͒ has been studied by means of microwave magnetic resonance at temperatures between 10 and 293 K. Experimental results for the peak-to-peak linewidth ⌬H pp and the slope d⌬H pp / dT have been discussed by the reduction of the exchange interaction between magnetic ions through the Zn substitution. For 0.6Ͻ x Ͻ 0.9 at T Ͻ 50 K, the electron-paramagnetic-resonance line tends toward the Lorentzian shape, indicating a medium with competing interactions with strong exchange coupling. For x Ͻ 0.4 at T Ͻ 50 K the line shapes have a rich Gaussian line indicating an increment of the interaction cluster medium.

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Magnetic Properties and Critical Behaviour of the B-spinel Zn_xCd_1-xCr₂S₄Compounds (0.2 ≤x≤ 0.5)

Cited by 2 publications

References 16 publications

Theoretical research on the transport and ionization rate coefficients in glow discharge dusty plasma

Theoretical research on the transport and ionization rate coefficients in glow discharge dusty plasma

Influence of a nonmagnetic dilution on the magnetic properties of a ZnxCd1−xCr2S4 system by means of microwave magnetic resonance

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