Dipolar Contributions to Magnetoelastic Energy of Crystal Grains with Interfaces

• Authors: T. Szumiata , R. Żuberek , H. Szymczak , J. Gonzalez
• Languages of publication: EN

Abstracts

EN

The magnetic anisotropy and magnetostriction in nanocrystalline grains in non-magnetic or magnetic matrix (nanoparticles or nanocrystalline materials) differ from their bulk properties. The interactions between atoms at the interface play the important role in these magnetic properties. In this paper the magnetic dipolar contribution to magnetostriction energy has been calculated for spherical crystal grains (of bcc and fcc symmetry) with interface layer of atoms possessing different magnetic moment. Total magnetoelastic energy of the sphere-interface system is a sum of magnetoelastic energy of the sphere, energy of the interactions between the sphere and the interface and also the energy of the interface. It was shown that magnetoelastic energy depends on the sphere size and interface thickness.

Keywords

EN

75.80.+q; 68.90.+g; 78.66.Jg

Discipline

• 68.90.+g: Other topics in structure, and nonelectronic properties of surfaces and interfaces; thin films and low-dimensional structures (restricted to new topics in section 68)
• 75.80.+q: Magnetomechanical effects, magnetostriction(for magnetostrictive devices, see 85.70.Ec)
• 78.66.Jg: Amorphous semiconductors; glasses

• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 3
• Pages: 531-534

Dates

published

2000-03

Contributors

author

T. Szumiata

• Department of Physics, Technical University of Radom, Malczewskiego 29, 26-600 Radom, Poland

author

R. Żuberek

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

H. Szymczak

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

J. Gonzalez

• Departamento de Fisica de Materiales, Universidad del Pais Vasco, Paseo Manuel de Lardizabal, 3, 20009 San Sebastian, Spain

Identifiers

DOI

10.12693/APhysPolA.97.531