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Volumn 121, Issue 15, 1999, Pages 3795-3796

Synthesis and characterization of stable stoichiometric clathrates of silicon and germanium: Cs8Na16Si136 and Cs8Na16Ge136 [9]

Author keywords

[No Author keywords available]

Indexed keywords

CLATHRIN; GERMANIUM; SILICON;

EID: 0033594332     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9844175     Document Type: Letter
Times cited : (104)

References (40)
  • 4
    • 0030709011 scopus 로고    scopus 로고
    • Thermoelectric Materials-New Directions and Approaches; Tritt, T. M., Kanatzidis, M. G., Lyon, H. B., Jr., Mahan, G. D., Eds.; Pittsburgh, PA
    • (b) Slack, G. A. In Thermoelectric Materials-New Directions and Approaches; Tritt, T. M., Kanatzidis, M. G., Lyon, H. B., Jr., Mahan, G. D., Eds.; MRS Symposium Proceedings, Vol. 478; Pittsburgh, PA, 1997; p 47.
    • (1997) MRS Symposium Proceedings , vol.478 , pp. 47
    • Slack, G.A.1
  • 27
    • 0345640036 scopus 로고    scopus 로고
    • note
    • Caution: Such reactions lead to high pressure in the niobium ampules and may result in a leak of cesium into the quartz ampule. The latter should be made sufficiently long, and one of its ends should be left protruding outside the furnace for condensation should a cesium leak occur.
  • 28
    • 0344777370 scopus 로고    scopus 로고
    • note
    • 136, respectively.
  • 29
    • 0344345523 scopus 로고    scopus 로고
    • note
    • The deviations from full occupancy for the cationic positions (with the framework positions kept fully occupied) were less than 1σ for both cesium and sodium in both compounds. The occupancies of the framework positions also deviated negligibly from full (with the cationic sites kept fully occupied), with maximums of 1σ for silicon and 2.5σ for germanium.
  • 31
    • 0344345521 scopus 로고    scopus 로고
    • note
    • max = 60°); (e) 1.59/4.50% for the sample heated in air.
  • 32
    • 0345208086 scopus 로고    scopus 로고
    • note
    • 136 down to 10 K. The room-temperature resistivities of the two samples were measured at ca. 48 and 52 mΩ·cm, respectively, while the corresponding numbers at 50 K were 30 and 45 mΩ·cm. The temperature dependence in both cases is very close to linear with slopes (temperature coefficients) of 0.072 and 0.028 mΩ·cm/°C, respectively.
  • 36
    • 0345208085 scopus 로고
    • Doctoral Dissertation, University of Stuttgart
    • (d) Llanos, J. Doctoral Dissertation, University of Stuttgart, 1983.
    • (1983)
    • Llanos, J.1
  • 37
    • 25544445943 scopus 로고
    • Doctoral Dissertation, University of Stuttgart
    • (e) Kröner, R. Doctoral Dissertation, University of Stuttgart, 1989.
    • (1989)
    • Kröner, R.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.