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Thermal conductivity of polycrystalline and amorphous Se–Te–Cu system

✍ Scribed by R. Wawryk; Cz. Marucha; K. Balcerek; B.M. Terzijska; Z.G. Ivanova

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
86 KB
Volume
40
Category
Article
ISSN
0011-2275

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✦ Synopsis

The thermal conductivity of chalcogenide binary Se±Te and ternary Se±Te±Cu alloys (polycrystalline and amorphous) has been investigated in stationary conditions within the temperature range 7±315 K. Non-typical low-temperature sharp maximum at about 14 K in the crystalline samples has been observed. A hysteresis has appeared in the amorphous sample with 5% Cu content. Qualitative analysis of the measurement results based on the Boltzmann equation has been presented.

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Thermal conductivity of polycrystalline
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✍ B. Sundqvist; B.M. Andersson 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 264 KB

We have measured the thermal conductivity ~: of bulk YBa2Cu40 s (1-2-4) between 30 and 310 K and at pressures p up to 1 GPa. At p = 0, ~: = 10 Wm-IK -1 near 100 K, twice that of sintered YBa2Cu3OT. s (1-2-3). ~¢ also decreases with increasing T more rapidly than in 1-2-3, to 7.4 Wm'IK "1 at 300 K. U