Thermal Conductivity of Gadolinium Monosulphide

Khusnutdinova, V.; Oskotspii, V. S.; Смирнов, И. А.; Sergeeva, V. M.

doi:10.1002/pssb.2220480134

Cited by 9 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Khusnutdinova et al [19] measured the thermal conductivity of GdS in the temperature range 80-720 K, where they also determined the Lorenz number and the electrical conductivity of the same sample of GdS, which can be used to estimate the electronic part of the thermal conductivity with the help of the Wiedman-Franz law. Following the earlier work of the author [8], the lattice thermal conductivity of GdS has been separated by subtracting the electronic part of the thermal conductivity from the total thermal conductivity measured by Khusnutdinova et al [19].…”

Section: Phonon Conductivity Of Gdsmentioning

confidence: 99%

“…Following the earlier work of the author [8], the lattice thermal conductivity of GdS has been separated by subtracting the electronic part of the thermal conductivity from the total thermal conductivity measured by Khusnutdinova et al [19].…”

Section: Phonon Conductivity Of Gdsmentioning

confidence: 99%

“…From their studies, it is clear that the SDV model gives a very good response in explaining experimental lattice thermal conductivity data at high temperatures. At the same time, the temperature-dependence of the phonon-phonon scattering relaxation rate used in the SDV model is also free from the Guthrie comments [13,14].Khusnutdinova et al [19] tried to explain the high-temperature lattice thermal conductivity data on GdS and LaS by using an analytical expression obtained in the frame of the Callaway [1 1 ] expression based on the high-temperature approxi--1 2 mations. They used an expression -t-3ph~wT for the three-phonon scattering relaxation rate, which is valid for longitudi.nal phonons only.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Analysis of lattice thermal conductivities of rare-earth sulphides at high temperatures

Dubey

1981

Journal of Thermal Analysis

View full text Add to dashboard Cite

The lattice thermal conductivities of rare-earth sulphides have been analyzed at high temperatures in the frame of the two-mode conduction of phonons for the first time by studying the total lattice thermal conductivities of GdS and LaS in the entire temperature range 100--1000 K. The temperature exponents for the three-phonon scattering relaxation rates are reported for the transverse as well as for the longitudinal phonons. The separate percentage contributions due to the transverse and longitudinal phonons towards the total lattice thermal conductivities of the above samples have similarly been studied. The role of the four-phonon processes too has been included in the present investigation.The lattice thermal conductivities of numerous samples have been studied by a number of workers [1-10], experimentally as well as theoretically, at high and at low temperature, and it is now well established that high-temperature lattice thermal conductivity data can not be explained by one conductivity integral as proposed by Callaway [11]. It was Holland [12] who first introduced the twomode conduction of phonons to explain the lattice thermal conductivities of Ge and Si at high temperatures. Later, following Guthrie [13,14], the author and his co-workers [15][16][17][18] proposed a modification to the Holland model, which is known as the Sharma-Dubey-Verma (SDV) model [15][16][17][18]. In the SDV model [15][16][17][18], the phonon-phonon scattering events have been classified into two classes: class 1 events in which a carrier phonon is annihilated by combination, and class II events in which annihilation takes place by splitting. From their studies, it is clear that the SDV model gives a very good response in explaining experimental lattice thermal conductivity data at high temperatures. At the same time, the temperature-dependence of the phonon-phonon scattering relaxation rate used in the SDV model is also free from the Guthrie comments [13,14].Khusnutdinova et al. [19] tried to explain the high-temperature lattice thermal conductivity data on GdS and LaS by using an analytical expression obtained in the frame of the Callaway [1 1 ] expression based on the high-temperature approxi--1 2 mations. They used an expression -t-3ph~wT for the three-phonon scattering relaxation rate, which is valid for longitudi.nal phonons only. At the same time, all of their calculations are based on the Callaway expression, which gives a good response to the experimental lattice thermal conductivity data at low temperatures only. Thus, it is interesting to analyse the lattice thermal conductivities of the above samples in the frame of the two-mode conduction of phonons.12

show abstract

Section: Phonon Conductivity Of Gdsmentioning

confidence: 99%

Section: Phonon Conductivity Of Gdsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Analysis of lattice thermal conductivities of rare-earth sulphides at high temperatures

Dubey

1981

Journal of Thermal Analysis

View full text Add to dashboard Cite

show abstract

Thermal properties of rare-earth chalcogenides

Смирнов

1972

Phys. Stat. Sol. (a)

Self Cite

View full text Add to dashboard Cite

Lattice Thermal Conductivity of Gadolinium Monosulphide above Room Temperature in the Frame of Two‐Mode Conduction of Phonons

Al-Edani

Dubey

1986

Physica Status Solidi (b)

View full text Add to dashboard Cite

The lattice thermal conductivity of gadolinium monosulphide is studied by estimating the separate contributions due to transverse and longitudinal phonons in the temperature range 300 to 800 K and a very good agreement is found between calculated and experimental values. It is also reported that the transverse phonons are mainly responsible for the heat conduction in the present sample. The temperature exponents for the three phonon scattering relaxation rates is also reported for gadolinium monosulphide for the first time.Durch Berechnung der getrennten Beitriige der transversalen und longitudinalen Phononen im Temperaturbereich 300 bis 800 K wird die thermische Gitterleitfghigkeit von Gadoliniummonosulfid untersucht und sehr gute ubereinstimmung zwischen berechneten und experimentellen Werten gefunden. Es wird ebenfalls gezeigt, da13 die transversalen Phononen hauptsachlich fur die Wiirmeleitung in der untersuchten Probe verantwortlich sind. Erstmalig werden such fur Gadoliniummonosulfid die Temperaturexponenten fur die drei Phononenstreurelaxationsraten angegeben.

show abstract

Thermal Conductivity of Gadolinium Monosulphide

Cited by 9 publications

References 1 publication

Analysis of lattice thermal conductivities of rare-earth sulphides at high temperatures

Analysis of lattice thermal conductivities of rare-earth sulphides at high temperatures

Thermal properties of rare-earth chalcogenides

Lattice Thermal Conductivity of Gadolinium Monosulphide above Room Temperature in the Frame of Two‐Mode Conduction of Phonons

Contact Info

Product

Resources

About