Preparation and electrical characterization of MES-type magnetodielectric system based on Co-Al-O nanogranular films

Structure and Tunneling Magnetodielectric Effects of Cobalt–(Barium Fluoride) Lateral Nanogranular Films

“…Nanogranular films, which consist of dispersed ferromagnetic nanogranules in a dielectric matrix, have attracted great interest because of their unique nano-scale electrical and magnetic interactions. Various magnetic field functionalities dependent on the spin-dependent tunneling probability in the films have been discovered in the past decades, including magnetoresistance, [1][2][3] magnetodielectric, [4][5][6][7][8][9][10][11][12] magneto-optic, 13) and Faraday effects. [14][15][16][17] In these functionalities, the tunneling magnetodielectric (TMD) effect has gained considerable attention because of its frequency selectivity above the MHz range [5][6][7]12) and electric bias field control.…”

“…[14][15][16][17] In these functionalities, the tunneling magnetodielectric (TMD) effect has gained considerable attention because of its frequency selectivity above the MHz range [5][6][7]12) and electric bias field control. 9,12) For applications such as magnetic field sensors, highfrequency filters, and frequency-selective switches, achieving desirable electrical resistivity and controllable frequency response with improved magnetic properties of nanogranular films is essential. In the past, two approaches, which involve material improvement and suitable integration into the sensing device structure, have been explored to improve the electric and magnetic performance of isotropic nanogranular films.…”