Title :
Effect of 55Mn NMR echo enhancement of nuclei arranged in domain walls of half-metallic Heusler compound NiMnSb in applied magnetic fields
Author :
Gavasheli, Ts. ; Mamniashvili, G. ; Gegechkori, T. ; Maghradze, O. ; Ghvedashvili, G. ; Akhalkatsi, A.
Author_Institution :
Dept. of Sci. R&D, Ivane Javakhishvili Tbilisi State Univ., Tbilisi, Georgia
Abstract :
The effect of NMR spin-echo enhancement of 55Mn nuclei arranged in domain walls of half metal Heusler compounds NiMnSb and NiMnSi in applied dc magnetic field was observed and studied. The effect could be related with the increase of spin-spin relaxation time at application of the outer dc magnetic field related with the rearrange and disappearance of the domain wall structure in the half metallic material.
Keywords :
antimony alloys; magnetic domain walls; manganese alloys; nickel alloys; silicon alloys; spin echo (NMR); spin-spin relaxation; 55Mn NMR spin-echo enhancement; NiMnSb; NiMnSi; applied magnetic field; dc magnetic field; domain wall structure; half-metallic Heusler compound; spin-spin relaxation time; Compounds; Magnetic domain walls; Magnetic domains; Magnetic fields; Materials; Nuclear magnetic resonance; Half metal; NMR-nuclear magnetic resonance; domain walls; magnetoresistance; relaxation; spintronics;
Conference_Titel :
Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED), 2014 XIXth International Seminar/Workshop on
Conference_Location :
Tbilisi
Print_ISBN :
978-1-4799-6213-6
DOI :
10.1109/DIPED.2014.6958308
