The influence of B variation on the electronic properties of Al3Ni20B (6≤x≤12)

Autor:	M. ElMassalami, A. Elzubair, F. A. B. Chaves, R. E. Rapp, M. Elhadi, Hiroyuki Takeya
Rok vydání:	2010
Předmět:	Superconductivity Materials science Condensed matter physics Magnetism Mechanical Engineering Metals and Alloys Intermetallic Electronic structure Metal Character (mathematics) Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium Density of states Ternary operation
Zdroj:	Journal of Alloys and Compounds. 499:11-16
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2010.03.051
Popis:	We investigated the influence of B variation on the structural, thermal, and electronic properties of the ternary intermetallics Al3Ni20Bx ( x = 6 , 7 , … , 12 ). On increasing the metalloid content, the cubic unit-cell parameter (space group F m 3 ¯ m ) is observed to increase linearly. Down to 2 K (for selected cases down to 120 mK), no evidence of superconductivity or (de)localized magnetism is observed in any of the studied samples; rather, all exhibit a nonmagnetic and metallic character. Furthermore, the Pauli susceptibilities, the coefficients of the specific heats, and the coefficients of the resistivities are found to correlate strongly (but non-montonically) with the percentage of the Ni content per unit formula (the Ni 3 d band is the dominant contributor to the density of states N ( E F ) ). Such a non-monotonic evolution of the electronic properties is attributed to a corresponding non-monotonic character of the N ( E ) curve within the neighborhood of E F .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44bda18f6f7db11f0f1ca9fecb9eedc8 https://doi.org/10.1016/j.jallcom.2010.03.051 Zobrazit plný text záznamu Full Text from ScienceDirect