Investigation of relaxation and transport processes in LiPO(N) glasses

Hockicko, Peter; Bury, Peter; Muñoz, Francisco

doi:10.1016/j.jnoncrysol.2012.12.027

Cited by 11 publications

(9 citation statements)

References 28 publications

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“…As it has been demonstrated previously, acoustic waves are suitable not only for the investigation of materials directly related to acoustics, but also to study the properties of semiconductor structures [7] and glasses [8][9][10][11][12]. In the particular case of lithium and copper bearing phosphate glasses, the authors showed previously that there seems to be a close correlation between the activation energy for the ionic conduction and the activation energy of the acoustic relaxation process below the glass transition temperature [8][9]. In these glasses, the temperature dependences of acoustic attenuation generally showed one or more peaks which have been attributed to different relaxation mechanisms related to ion hopping processes of mobile cations, the glass network structure and dynamics connected with local distorsions and diffusion [13].…”

Section: Introductionmentioning

confidence: 94%

Investigation of the relationships between acoustic attenuation and ionic conduction of metaphosphate glasses

Muñoz-Senovilla

Bírešová

Hockicko

et al. 2016

Journal of Non-Crystalline Solids

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This paper deals with phosphate-based glasses and summarizes the results obtained from acoustic attenuation and ionic conduction investigations. Several relaxation processes have been found to be connected with different activation energies, for which Double Power Law and Gaussian functions have been used for their modelling. The activation energy of the acoustic relaxations in the metaphosphate glasses increases with the increasing cationic potential of the modifier elements, following a direct relationship between the cationic potential of the modifier in the glasses and their influence on the short and medium range structural arrangements of the PO 4 tetrahedra. On the other hand, the variation of the activation energy for the ionic conduction shows a similar trend than those observed in the acoustic attenuation processes, which indicates that both phenomena are closely influenced by the short and medium range structure of the glasses, particularly through the strength of the modifier-oxygen bonds and the glass network reticulation.

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Section: Introductionmentioning

confidence: 94%

Investigation of the relationships between acoustic attenuation and ionic conduction of metaphosphate glasses

Muñoz-Senovilla

Bírešová

Hockicko

et al. 2016

Journal of Non-Crystalline Solids

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“…The determination of the imaginary part (c ' ) of the complex dielectric constant compared to the real part (c ') plays a crucial role in the study of the fundamental properties of the investigated materials [8], where c '(OJ) and c "(OJ) characterize the refractive and absorptive properties of the material, respectively. The loss tangent (dissipation factor) defined by the relation (6) can be also used for the relaxation spectroscopy that reflects the basic features of the relaxation processes of mobile ions. This quantity is related to the attenuation constant (or absorption coefficient) of an electromagnetic wave propagating in a material.…”

Section: Theoretical Principlesmentioning

confidence: 99%

“…The conductivity and dielectric relaxation spectroscopies are powerful techniques for the study of ion relaxation and transport mechanisms [6].…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of LiPO<inf>3</inf> glasses

et al. 2014

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This paper reports on the electrical properties of LiP03 glass over a wide range of frequencies (10 Hz -2 MHz) and temperatures (290 K -627 K). The temperature dependence of a.c. conductivity is studied at different frequencies. The d.c. conductivity is due to the hopping of lithium ions. A theoretical model and mathematical fit of conductivity measurements are used for characterization of the ionic hopping motion connected with the mobility of conducting Li+ ions.

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“…Their shape is formed dependent on the operational conditions, while variations in the values of electrical and thermal conductivities are the main parameters affecting the electro-thermal behavior of semiconductors. Therefore, if the exact electro-thermal model of a semiconductor component is under consideration, the non-linear behavior of variables must be addressed by the model to obtain accurate results for wide operational conditions [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Indirect Electro-Thermal Modelling of Semiconductor Diode Using Non-Linear Behavior of Volt-Ampere Characteristic

Frivaldský

Pavelek

2021

Energies

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The aim of the proposed paper is the development of an electro-thermal model of semiconductor component using an indirect modelling approach. The approach is based on the integration of the component’s electrical properties considering non-linear behavior of a V-A characteristic. In this way, the identification of semiconductor material properties considering non-linear dependencies and semiconductor volume is provided. The main aim of the presented approach is simplification of the electro–thermal interaction within finite-element modelling of the semiconductor components. In this way, it is possible to omit more complex boundary definitions and the setting of the semiconductor-based physics. The proposed methodology is presented within the development of a simulation model based on a small high-frequency rectifying diode, taking into account its geometric dimensions and the internal arrangement of its structure. Simulation was performed as a transient analysis, while the results from the steady-state operation for various operational conditions were compared to experimental measurements. Comparison between simulation and experiments is within 5% of the relative error. The achieved results represent appropriate accuracy of model behavior compared to the real operation.

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Investigation of relaxation and transport processes in LiPO(N) glasses

Cited by 11 publications

References 28 publications

Investigation of the relationships between acoustic attenuation and ionic conduction of metaphosphate glasses

Investigation of the relationships between acoustic attenuation and ionic conduction of metaphosphate glasses

Electrical properties of LiPO<inf>3</inf> glasses

Indirect Electro-Thermal Modelling of Semiconductor Diode Using Non-Linear Behavior of Volt-Ampere Characteristic

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