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Volumn 48, Issue 14, 2009, Pages 6641-6651

Magnesium substitutions in rare-earth metal germanides with the orthorhombic Gd 5Si 4-type structure. synthesis, crystal chemistry, and magnetic properties of RE 5- xMg xGe 4 [RE= Gd-Tm, Lu, and Y

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EID: 67650427518     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic900616c     Document Type: Article
Times cited : (31)

References (80)
  • 31
    • 67650353002 scopus 로고    scopus 로고
    • For instance, following the Zintl-Klemm concept Kauzlarich, S. M, Chemistry, Structure and Bonding of Zintl Phases and Ions; VCH Publishers: New York, 1996; and references therein, the 31 valence electrons in the RE5sGe4 formula unit, depending on the structure and the number of Ge-Ge bonds can be counted as follows: [RE3, 5[Ge26]2[3e, all Ge atoms are dimerized, Gd5Si4 type, or as [RE3, 5[Ge26, Ge4]2[le, only a half of the Ge atoms are dimerized, Sm5Ge4 type, respectively
    • 4 type), respectively.
  • 42
    • 67650365789 scopus 로고    scopus 로고
    • Caution! Such reactions in sealed Nb-tubes can lead to a highpressure, and may result in a leak of Mg and its subsequent reaction with walls of the fused silica ampoules. To minimize the negative effects of such leaks, the silica ampoules should be made sufficiently long, so that one of their ends is left protruding outside the furnace, should leaks occur (for a condensation). If this is not possible because of furnace design or other practical considerations, the Nb-containers should be double-jacketed and sealed within two fused silica tubes.
    • Caution! Such reactions in sealed Nb-tubes can lead to a highpressure, and may result in a leak of Mg and its subsequent reaction with walls of the fused silica ampoules. To minimize the negative effects of such leaks, the silica ampoules should be made sufficiently long, so that one of their ends is left protruding outside the furnace, should leaks occur (for a condensation). If this is not possible because of furnace design or other practical considerations, the Nb-containers should be double-jacketed and sealed within two fused silica tubes.
  • 49
    • 84869366044 scopus 로고    scopus 로고
    • 44 for example.
    • 44 for example.
  • 50
    • 84869350341 scopus 로고    scopus 로고
    • 4, both obtained from our own single-crystal Xray diffraction work at 120 K (Supporting Information, Tables Sl, S2, and S3).
    • 4, both obtained from our own single-crystal Xray diffraction work at 120 K (Supporting Information, Tables Sl, S2, and S3).
  • 54
    • 0343946352 scopus 로고    scopus 로고
    • Salamakha, P. S.; Sologub, O. L.; Bodak, O. I. Ternary Rare-EarthGermanium Systems. In Handbook on the Physics and Chemistry of Rare Earths; Gschneidner, K. A., Jr., Eyring, L., Eds.; North Holland: Amsterdam, 1999; 27, p 1.
    • Salamakha, P. S.; Sologub, O. L.; Bodak, O. I. Ternary Rare-EarthGermanium Systems. In Handbook on the Physics and Chemistry of Rare Earths; Gschneidner, K. A., Jr., Eyring, L., Eds.; North Holland: Amsterdam, 1999; Vol. 27, p 1.
  • 70
    • 67650414576 scopus 로고    scopus 로고
    • The effective magnetic moments are somewhat higher that the expected moments for a free ion, almost certainly because of small amounts of secondary phases present
    • The effective magnetic moments are somewhat higher that the expected moments for a free ion, almost certainly because of small amounts of secondary phases present.
  • 73
    • 77956965072 scopus 로고
    • Buschow, K. H. J, Wohlfarth, E. P, Eds, North Holland: Amsterdam
    • (a) Brommer, P. E. Franse, J. J. M. In Ferromagnetic Materials; Buschow, K. H. J., Wohlfarth, E. P., Eds.; North Holland: Amsterdam, 1990; Vol. 5, p 323.
    • (1990) Ferromagnetic Materials , vol.5 , pp. 323
    • Brommer, P.E.1    Franse, J.J.M.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.