Neutron diffraction studies on structural and magnetic properties of RE{sub 2}NiGe{sub 3} (RE=La, Ce)

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2014.05.018· OSTI ID:22443393

Kalsi, Deepti ^[1]; Rayaprol, S.; Siruguri, V. ^[2]

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1. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India)
2. UGC-DAE Consortium for Scientific Research, Mumbai Centre, R-5 Shed, BARC Campus, Mumbai 400085 (India)

We report the crystallographic properties of RE{sub 2}NiGe{sub 3} (RE=La, Ce) synthesized by arc melting. Rietveld refinement on the powder neutron diffraction (ND) data suggest both compounds are isostructural and crystallize in the non-centrosymmetric Er{sub 2}RhSi{sub 3} type structure having hexagonal space group P6{sup ¯}2c. In the crystal structure of RE{sub 2}NiGe{sub 3}, two dimensional arrangements of nickel and germanium atoms lead to the formation of hexagonal layers with rare earth atoms sandwiched between them. Magnetic susceptibility measurements performed in low fields exhibit antiferromagnetic ordering in cerium compound around (T{sub o}=) 3.2 K. Neutron diffraction measurements at 2.8 K (i.e., at T

• OSTI ID: 22443393
• Journal Information: Journal of Solid State Chemistry, Vol. 217; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIFERROMAGNETISM
CERIUM COMPOUNDS
CRYSTALLOGRAPHY
GERMANIUM
MAGNETIC SUSCEPTIBILITY
NEUTRON DIFFRACTION
POWDERS
RARE EARTHS
SPACE GROUPS
TWO-DIMENSIONAL SYSTEMS
X-RAY DIFFRACTION