Na NMR investigations of the itinerant ferromagnets NaFeSb and NaCaFeSb

A RABIS,M BAENITZ,A LEITHEJASPER,A GIPPIUS, E MOROZOVA,W SCHNELLE,H ROSNER,J MYDOSH,Y GRIN,F STEGLICH

PHYSICA B-CONDENSED MATTER（2005）

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摘要

A Na-23 (I = 3/2) NMR study is presented on the itinerant ferromagnets NaFe4Sb12 and the isostructural Ca-substituted compound Na0.5Ca0.5Fe4Sb12 performed in 7.05 and 11.74 T in the temperature range from 4 to 300 K. Both compounds show a bulk ferromagnetism below 85 K. Static (Knight-shift) and dynamic (spin-lattice relaxation) measurements are described in the framework of the SCR theory for itinerant d band metals. (c) 2005 Elsevier B.V. All rights reserved.

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NMR spectroscopy,itinerant ferromagnetism

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