Angular control of multi-mode resonance frequencies in obliquely deposited CoZr thin films with rotatable stripe domains*

Abstract

We investigate the angular-dependent multi-mode resonance frequencies in CoZr magnetic thin films with a rotatable stripe domain structure. A variable range of multi-mode resonance frequencies from 1.86 GHz to 4.80 GHz is achieved by pre-magnetizing the CoZr films along different azimuth directions, which can be ascribed to the competition between the uniaxial anisotropy caused by the oblique deposition and the rotatable anisotropy induced by the rotatable stripe domain. Furthermore, the regulating range of resonance frequency for the CoZr film can be adjusted by changing the oblique deposition angle. Our results might be beneficial for the applications of magnetic thin films in microwave devices.

In-plane current-induced magnetization reversal of Pd/CoZr/MgO magnetic multilayers

“…[12] CoZr possesses the merits of the high magnetocrystalline anisotropy, good corrosion resistance and radiation resistance, [13] potentially presenting good hard magnetic properties and multi-mode resonance frequencies. [14][15][16] However, there are few studies on perpendicular magnetic anisotropy and current-driven magnetization reversal of CoZrbased alloys although these alloys could be potential ferromagnetic candidates in the spintronic devices.…”

Anti-function solution of uniaxial anisotropic Stoner–Wohlfarth model

“…[1,4] At present, the SW model is not only widely used in magnetic recording media [5][6][7][8] and hard magnets [9,10] but also a basic model for describing the dynamic magnetic properties of soft magnetic materials under microwaves. [11][12][13][14][15] In addition, it provides an effective analysis model for magnetoelectric transport such as anisotropic magnetoresistance and anomalous Hall effect, [16][17][18] and spintronics research such as spin Hall magnetoresistance and spin Hall effect. [19,20] Determining the stable direction of magnetization under an applied magnetic field is the key to obtain the magnetizing curves and hysteresis loops, as well as understand the basic magnetic physical quantities.…”