Record Details

Ferromagnetic resonance studies of icosahedral Al-Mn-Pd-B alloys

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Ferromagnetic resonance studies of icosahedral Al-Mn-Pd-B alloys
 
Creator BAHADUR, D
SRIVASTAVA, CM
YEWONDWOSSEN, MH
DUNLAP, RA
 
Subject cu-mn
magnetic-properties
quasi-crystals
si alloys
quasicrystalline
al86mn14
iron
 
Description Single-phase quasicrystalline alloys of the series Al70-xMn15Pd15Bx (0 less than or equal to x less than or equal to 10) prepared by the melt spinning method have been shown to be of the icosahedral structure. Ferromagnetic resonance (FMR) studies have been undertaken in order to characterize the magnetic behaviour of these materials. The alloy with x = 0 exhibits a single resonance peak and does not exhibit spontaneous magnetic order. Alloys with x greater than or equal to 1 show the existence of two resonances due to two distinct Mn environments in the icosahedral structure. One resonance, resulting from non-magnetic Mn ions, shows FMR parameters which are temperature independent. The resonance resulting from magnetically ordered Mn ions shows an amplitude and field which is a function of temperature, and disappears above a critical temperature. FMR measurements are supplemented with x-ray diffraction, calorimetry and magnetization data. The magnetic behaviour of this alloy system is explained on the basis of Anderson's theory of moment formation and the indirect coupling of 3d moments.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-03T18:14:03Z
2011-12-26T12:54:20Z
2011-12-27T05:42:02Z
2011-08-03T18:14:03Z
2011-12-26T12:54:20Z
2011-12-27T05:42:02Z
1995
 
Type Article
 
Identifier JOURNAL OF PHYSICS-CONDENSED MATTER, 7(50), 9883-9895
0953-8984
http://dx.doi.org/10.1088/0953-8984/7/50/021
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9110
http://hdl.handle.net/10054/9110
 
Language en