2015/11/29 by Eugene M. Chudnovsky, Chudnovsky, Eugene M., Reem Jaafar +1
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Magnetic and Electromagnetic Effects #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · pdf · doi:10.48550/arxiv.1511.09109
openalex publication_date 2015/11/29 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28
We show that the magnetic moment of a nanoparticle embedded in the surface of\na solid can be switched by surface acoustic waves (SAW) in the GHz frequency\nrange via a universal mechanism that does not depend on the structure of the\nparticle and the structure of the substrate. It is based upon generation of the\neffective ac magnetic field in the coordinate frame of the nanoparticle by the\nshear deformation of the surface due to SAW. The magnetization reversal occurs\nvia a consecutive absorption of surface phonons of the controlled variable\nfrequency. We derive analytical equations governing this process and solve them\nnumerically for the practical range of parameters.\n