NonCollinear Magnetism in Permalloy
Abstract
Permalloy is an important material in a wide variety of magnetic systems, most notably in GMR readheads. However, despite this great interest its properties are not fully understood. For an in depth analysis of important physical properties as e.g. electric transport or magnetic anisotropy a detailed understanding of the distribution of magnetic moments on an atomic level is necessary. Using our first principles Locally Selfconsistent Multiple Scattering (LSMS) method we calculate the magnetic ground state structure for a large supercell model of Permalloy. Our code allows us to solve both the usual nonrelativistic Schrdinger equation as well as the fully relativistic Dirac equation and to find the magnitude and direction of the magnetic moments at each atomic site. While the nonrelativistic calculation yields a collinear ground state in accordance with previous calculations, we find the ground state for the fully relativistic calculation to be slightly noncollinear. We also investigate the influence of variations in the iron concentration on the distribution of magnetic moments.
 Authors:
 ORNL
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Center for Computational Sciences
 Sponsoring Org.:
 USDOE Office of Science (SC)
 OSTI Identifier:
 931297
 DOE Contract Number:
 DEAC0500OR22725
 Resource Type:
 Conference
 Resource Relation:
 Conference: 10th Joint MMM/Intermag Conference, Baltimore, MD, USA, 20070107, 20070111
 Country of Publication:
 United States
 Language:
 English
 Subject:
 36 MATERIALS SCIENCE; ANISOTROPY; DIRAC EQUATION; GROUND STATES; IRON; MAGNETIC MOMENTS; MAGNETISM; MULTIPLE SCATTERING; PERMALLOY; PHYSICAL PROPERTIES; TRANSPORT
Citation Formats
Eisenbach, Markus, Nicholson, Don M, and Stocks, George Malcolm. NonCollinear Magnetism in Permalloy. United States: N. p., 2007.
Web.
Eisenbach, Markus, Nicholson, Don M, & Stocks, George Malcolm. NonCollinear Magnetism in Permalloy. United States.
Eisenbach, Markus, Nicholson, Don M, and Stocks, George Malcolm. Mon .
"NonCollinear Magnetism in Permalloy". United States.
doi:.
@article{osti_931297,
title = {NonCollinear Magnetism in Permalloy},
author = {Eisenbach, Markus and Nicholson, Don M and Stocks, George Malcolm},
abstractNote = {Permalloy is an important material in a wide variety of magnetic systems, most notably in GMR readheads. However, despite this great interest its properties are not fully understood. For an in depth analysis of important physical properties as e.g. electric transport or magnetic anisotropy a detailed understanding of the distribution of magnetic moments on an atomic level is necessary. Using our first principles Locally Selfconsistent Multiple Scattering (LSMS) method we calculate the magnetic ground state structure for a large supercell model of Permalloy. Our code allows us to solve both the usual nonrelativistic Schrdinger equation as well as the fully relativistic Dirac equation and to find the magnitude and direction of the magnetic moments at each atomic site. While the nonrelativistic calculation yields a collinear ground state in accordance with previous calculations, we find the ground state for the fully relativistic calculation to be slightly noncollinear. We also investigate the influence of variations in the iron concentration on the distribution of magnetic moments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Permalloy is an important material in a wide variety of magnetic systems, most notably in GMR readheads. However, despite this great interest its properties are not fully understood. For an in depth analysis of important physical properties as e.g. electric transport or magnetic anisotropy a detailed understanding of the distribution of magnetic moments on an atomic level is necessary. Using our first principles Locally Selfconsistent Multiple Scattering (LSMS) method we calculate the magnetic ground state structure for a large supercell model of Permalloy. Our code allows us to solve both the usual nonrelativistic Schrdinger equation as well as the fullymore »

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