Synthesis, magnetic and electrical properties of R3AlCx (R = Ce, Pr and Nd)

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Title:	Synthesis, magnetic and electrical properties of R3AlCx (R = Ce, Pr and Nd)
Authors:	Ghule, S.S. Garde, C.S. Ramakrishnan, S. SINGH, S. Rajarajan, A.K. Laad, Meena Karmakar, Koushik Dept. of Physics
Keywords:	Synthesis Magnetic Electrical properties Synthesis of materials X-ray diffraction Magnetic susceptibility Magnetization Band structure calculations Carbide 2017
Issue Date:	Sep-2017
Publisher:	Elsevier B.V.
Citation:	Physica B: Condensed Matter, 521, 168-174.
Abstract:	R3AlCx (R = Ce, Pr and Nd; x = 0-1) series has been synthesized by arc melting. Rietveld analysis of x-ray powder diffraction reveals cubic (Pm-3m) structure. A Kondo temperature TK ~ 1 K is estimated for Ce3AlC0.65 from the susceptibility and resistivity data. Magnetic susceptibility measurements indicate antiferromagnetic (AFM) order for R = Pr (x = 0.8 and 1) and Nd (x = 0.6, 0.8 and 1) and ferromagnetic (FM) for Nd3Al. Metamagnetic behaviour in the magnetization curve indicates complex magnetic structure. Band structure calculations indicate growth of a pseudo-gap in the density of states (DOS) from Ce3AlC to Pr3AlC to Nd3AlC. The DOS calculations predict a metallic behaviour which is consistent with the resistivity measurements.
URI:	http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3534 https://doi.org/10.1016/j.physb.2017.06.080
ISSN:	0921-4526 1873-2135
Appears in Collections:	JOURNAL ARTICLES

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