Investigation of the heat conductivity of niobium in the temperature range 0.05?23 K

Gladun, A.; Gladun, C.; Knorn, M.; Vinzelberg, H.

doi:10.1007/bf00655712

Cited by 21 publications

(14 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the large number of measured curves we chose those for which measurements in the normal range also were performed. The results of Kes et al, 1~ Mendelsson and Rosenberg 11 Klauss, 12 Ho et al, 13 Muto et al, 14 White and Woods, 2~ and Gladun et al 15 confirm the dependence observed in Fig. 4.…”

Section: Thermal Conductivitysupporting

confidence: 80%

Investigation of the thermal and electrical transport properties of niobium and niobium films at temperatures between 9 and 50 K

Reiche

Pompe

1979

J Low Temp Phys

View full text Add to dashboard Cite

The thermal conductivity and the electrical conductivity of niobium crystals and niobium films have been investigated in the normal state from 9 to 50 K. The deviations from the Matthiessen rule, W = B/T + o~ T 2, have been studied in detail for the thermal case. The investigation shows a slight dependence of the electron-phonon scattering coefficient ~ upon the impurity content of the sample. With the specific electrical residual resistivity po as the measure for the impurity content, the following correlation can be formulated: ~= 1.2x lO-3[po/(l~-cm)] ~176 a being obtained in cm/ W K. Above 20 K an additional scattering mechanism occurs. The temperature dependence of the additional resistance A W between 20 and 50 K is proportional to T 55. 9 9 T 4. Possible causes of this phenomenon are discussed. For the discussion, all the data available in the literature on the thermal conductivity of niobium in this temperature region are used.

show abstract

Section: Thermal Conductivitysupporting

confidence: 80%

Investigation of the thermal and electrical transport properties of niobium and niobium films at temperatures between 9 and 50 K

Reiche

Pompe

1979

J Low Temp Phys

View full text Add to dashboard Cite

show abstract

“…The thermal conductivity was measured by the stationary method [5] in the temperature range 2 to 71 K. The sample was mounted to the cryogenic liquid chamber of the cryostat via a variable thermal resistivity by means of metallic clamps. A heater, wounded at the lower end of the sample, produced a t,emperature gradient along it.…”

Section: Methodsmentioning

confidence: 99%

Thermal conductivity of high-purity molybdenum

Gladun

Vinzelberg

1980

Phys. Stat. Sol. (a)

Self Cite

View full text Add to dashboard Cite

The thermal conductivity is measured in the temperature range 2 to 70 K in three single‐crystal molybdenum samples having residual resistivity ratios of 68000, 35000, and 18000. In the temperature range 2 to 18 K the measured values of the thermal conductivity may be described by the equation W = A/T + BT2 + CT. Equal values are found for the coefficients B and C for all three crystals (B = 1.7 × 10−5 cm/KW, C = 1.2 × 10−4 cm/W), whereas the values for the coefficient A are related to the residual resistivity ϱo according to the Wiedemann‐Franz law (A = ϱo/Lo, Lo Lorenz number). In the temperature range 18 < T < θD/10 (θD = 430 K, Debye temperature) the thermal resistivity increases more rapidly with temperature than T2.

show abstract

“…The values of niobium single crystals with residual resistance ratios between 26 and 1800 as obtained by Anderson and O'Hara [19] are similar to our data, both concerning the temperature dependence and the magnitude of kg. I n the case of a high-purity niobium specimen with residual resistance ratio of 33000 [20] k , seems to be closer to curve B, indicating a less strong phonon-electron interaction. However, the determination of Kg, from the total conductivity K , is in the case of a high-purity specimen not easy and, in addition, the function hBRT as calcula,ted by Bardeen et al [a] is only valid if the electron free mean path is limited by impurity scattering rather than by phonon-scattering as in the case of a high-purity specimen.…”

Section: Comparison With Other Experimental Datamentioning

confidence: 77%

Electron–Phonon Scattering and Low‐Temperature Thermal Conductivity of Niobium and Tantalum Single Crystals

Wasserbäch

1985

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

Investigation of the heat conductivity of niobium in the temperature range 0.05?23 K

Cited by 21 publications

References 22 publications

Investigation of the thermal and electrical transport properties of niobium and niobium films at temperatures between 9 and 50 K

Investigation of the thermal and electrical transport properties of niobium and niobium films at temperatures between 9 and 50 K

Thermal conductivity of high-purity molybdenum

Electron–Phonon Scattering and Low‐Temperature Thermal Conductivity of Niobium and Tantalum Single Crystals

Contact Info

Product

Resources

About