Magnetic properties of the single crystal stannides Ln7Co6Sn23 (Ln = Dy, Ho) and Ln5Co6Sn18(Ln = Er, Tm)

Single crystals of Ln7Co6Sn23 (Ln=Dy, Ho) and Ln5Co6Sn18 (Ln=Er, Tm) have been grown using tin-flux. Ln7Co6Sn23 (Ln=Dy, Ho) adopts the trigonal Ho7Co6Sn23 structure type in space group P3_m1 (No. 164) with a=9.6420(4)A, c=9.8590(5)A, and V=793.77(6)A3 for Dy7Co6Sn23 and a=9.6210(3)A, c=9.8210(4)A, a...

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Veröffentlicht in:	Physica. B, Condensed matter Condensed matter, 2008-04, Vol.403 (5-9), p.1628-1629
Hauptverfasser:	OKUDZETO, Edem K, THOMAS, Evan L, MOLDOVAN, Monica, YOUNG, David P, CHAN, Julia Y
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Physics Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
Online-Zugang:	Volltext
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Zusammenfassung:	Single crystals of Ln7Co6Sn23 (Ln=Dy, Ho) and Ln5Co6Sn18 (Ln=Er, Tm) have been grown using tin-flux. Ln7Co6Sn23 (Ln=Dy, Ho) adopts the trigonal Ho7Co6Sn23 structure type in space group P3_m1 (No. 164) with a=9.6420(4)A, c=9.8590(5)A, and V=793.77(6)A3 for Dy7Co6Sn23 and a=9.6210(3)A, c=9.8210(4)A, and V=787.27(5)A3 for Ho7Co6Sn23 (Z=1). Whilst Ln5Co6Sn18 (Ln=Er, Tm) adopts the tetragonal Sn1-xErxEr4Rh6Sn18 structure (I41/acd, No. 142) with a=13.5310(2)A, c=26.9970(4)A, V=4942.83(13)A3 for Er5Co6Sn18 and a=13.5190(6)A, c=26.9760(9)A, V=4930.2(4)A3 for Tm5Co6Sn18 (Z=8). We report the low-temperature magnetic behavior of the above compounds. Dy7Co6Sn23, Ho7Co6Sn2, Er5Co6Sn18 and Tm5Co6Sn18 show weak magnetic interactions. A signature of magnetic ordering is only observed in Dy7Co6Sn23.
ISSN:	0921-4526 1873-2135
DOI:	10.1016/j.physb.2007.10.204