Structural, Superconducting and Magnetic Properties of La3-XRxNi2B2N3-δ with R = Ce, Pr, Nd

Tahir Ali; Ernst Bauer; Gerfried Hilscher; Herwig Michor

doi:10.4028/www.scientific.net/SSP.170.165

Paper Titles

Replacement of Vanadium by Ferrovanadium in Ti-Based BCC Alloys for Hydrogen Storage
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Synthesis and Physical Properties of (Na_xRE_1-x)AlB₁₄ (RE=Li, Mg, Rare Earths) Obtained by Molten Al Flux
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Mössbauer Spectroscopic Analysis of Nd₂Fe₁₄B/α-Fe Hard Magnetic Nanocomposites
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Influence of Surface Active Substances on Magnetic Properties of Goethite Nanoparticles
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Structural, Superconducting and Magnetic Properties of La_3-XR_xNi₂B₂N_3-δ with R = Ce, Pr, Nd
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Hybridized Electronic States in Dense Intermetallics as Studied by ESR
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The Pyrrhotite 32 K Magnetic Transition
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Magnetic Properties and Magnetocaloric Effect in Selected MM’X-Type (M, M’ = 3d or 4d Metal, X = As, P, Ge) and Mn_1-xT_xAs-Type (T = 3d Metal) Intermetallics
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A Model for the Growth of Fe₂B Layers on a Steel Substrate: Effect of the Surface Boron Concentration
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Structural, Superconducting and Magnetic Properties of La_3-XR_xNi₂B₂N_3-δ with R = Ce, Pr, Nd

Abstract:

We report on structural and superconducting properties of La3-xRxNi2B2N3- where La is substituted by the magnetic rare-earth elements Ce, Pr, Nd. The compounds Pr3Ni2B2N3- and Nd3Ni2B2N3- are characterized for the first time. Powder X-ray diffraction confirmed all samples R3Ni2B2N3- with R = La, Ce, Pr, Nd and their solid solutions to crystallize in the body centered tetragonal La3Ni2B2N3 structure type. Superconducting and magnetic properties of La3-xRxNi2B2N3- were studied by resistivity, specific heat and susceptibility measurements. While La3Ni2B2N3- has a superconducting transition temperature Tc ~ 14 K, substitution of La by Ce, Pr, and Nd leads to magnetic pair breaking and, thus, to a gradual suppression of superconductivity. Pr3Ni2B2N3- exibits no long range magnetic order down to 2 K, Nd3Ni2B2N3- shows ferrimagnetic ordering below TC =17 K and a spin reorientation transition to a nearly antiferromagnetic state at 10 K.