Zobrazeno 1 - 10
of 229
pro vyhledávání: '"Hj. Mattausch"'
Publikováno v:
Solid State Sciences. 10:401-407
Condensed cluster phases with the nominal compositions Ln14(C2)3I20 (Ln = La, Ce, Pr) are strongly disordered by a lamellar intergrowth. The thickness and composition of layers of clusters containing n (C2)Ln6 octahedra linked via opposite edges is d
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 633:1708-1712
The power of electron microscopy techniques for the determination of structure and composition of marginal byproducts is demonstrated for rare earth metal cluster compounds. Small amounts of the new phase Gd4GaI6 in samples with the nominal compositi
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 631:316-326
Die Phase “La5B2C6” wird in der Literatur als bei 6.9 K supraleitend, aber auch bis zu 2 K als normalleitend beschrieben. Orientierende Versuche zeigen, dass ein Wechsel durch entsprechende thermische Vorbehandlung hervorgerufen werden kann. In u
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 218:321-331
The average structures (Immm) of Gd13Br18B3 (A = 3.9923(2) Å, B = 17.0462(12) Å, C = 28.3039(19) Å) and Tb13Br18B3 (A = 3.9637(3) Å, B = 16.9063(13) Å, C = 28.1068(18) Å) were solved taking into account Bragg intensities only. The average struc
Publikováno v:
Journal of Alloys and Compounds. :400-403
The compound Tb 2 C 2 I 2 crystallizes with a layered structure (space group= C2/m ), which has a close-packed arrangement of I–Tb–Tb–I slabs. C 2 units are located within the Tb octahedral voids. Powder magnetic susceptibility measurements sug
Publikováno v:
Journal of Alloys and Compounds. :257-261
The superconducting properties of the layered lanthanum carbide halides La 2 C 2 X 2 (X=Br, I) and mixed halides are investigated. These compounds show superconductivity at 7.03(5) for X=Br and at ≈1.7 K for X=I, respectively. Selected compositions
Publikováno v:
Physica C: Superconductivity. :456-459
Superconductivity in layered yttrium carbide bromides and iodides with transition temperatures ranging up to 11.6 K is achieved by adjusting the Br:I, ratio to ≈1:3 in phases of Y 2 C 2 (Br,I) 2 . In our contribution, we compile basic physical and
Publikováno v:
The Journal of Physical Chemistry B. 101:9951-9957
The new compounds RE4X5B4 (RE = La, Ce, Pr, Gd and X = Br, I) and RE4I5B2C (RE = La, Ce) are prepared via the reaction of RE metal, REX3 and B, or B and C at temperatures 1670 ≥ T ≥ 1270 K in welded tantalum ampoules. Chains of interconnected B4
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 623:1815-1820
Die Realstruktur der Yttriumiodidcarbidoxide wurde mittels HRTEM untersucht. In den Strukturen sind planare Schichtfragmente der allgemeinen Formel Y2I2C uber Ketten von eckenverknupften Y4O-Tetraedern zu gewellten Metallatom-Doppelschichten kondensi
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 623:1447-1454
An investigation on the real structure of Gd6Cl5C3 has been carried out by means of high-resolution electron microscopy. The occurence of lamellar defects is interpreted as chemical intergrowth of the two closely related phases Gd6Cl5C3 and Gd2Cl2C.