Regensburg 2007 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 15: Poster:ThinFilms(1-33),Transp.(34-49),ExchBias(50-56),
Spindynamics(57-70),Micro-nanostr.Mat.(71-82),
Particles/Clust.(83-88), Mag.Imag./Surface(89-96),
Spinelectronics(97-109), Theory/Micromag.(110-116),
Spinstruct/Phasetr.(117-128),Magn.Mat.(129-139),
Aniso.+Measuring(140-145), MolMag.(146-152),
MSMA(153-156)
MA 15.139: Poster
Dienstag, 27. März 2007, 15:00–19:00, Poster A
Single crystal growth and physical properties of ErPd2Si2 intermetallic compound — •Chongde Cao1, Günter Behr1, Wolfgang Löser1, Irina Mazilu1, E.V. Sampathkumaran2, and Bernd Büchner1 — 1Leibniz Institute for Solid State and Materials Research Dresden, 01171 Dresden, Germany — 2Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai - 400005, India
The various classes of multicomponent intermetallic rare earth-transition metal-compounds offer a great potential of outstanding properties. A bulk single crystal (d=6mm, l=50mm) of ErPd2Si2 compound has been successfully grown at a velocity of 10 mm/h by using floating zone method with optical heating. X-ray Laue back-scattering analysis indicates the crystal growth direction is close to [110] orientation with an inclination angle of 14.9∘ against the rod axis. Morphological observation and concentration measurement show element segregation occurs along the rod axis and the radius directions. The magnetic susceptibility of ErPd2Si2 single crystal reveals an antiferromagnetic ordering at about 4 K. The crystal structures, electrical resistivity, magnetic susceptibility, heat-capacity and magnetoresistance of different orientations are investigated in comparison with polycrystals. References:
W. Bazela, J. Leciejewicz, A. Szytula, et al., J. Mag. Mag. Mater., 1991, 96, 114.
K. Tomala, J.P. Sanchez, B. Malaman, et al., J. Mag. Mag. Mater., 1994, 131, 345.