(P104-P0244)Dielectric and Tunneling Magneto-Dielectric Responses in Composition-graded Granular Films of Co-MgF2

摘要

Dielectric and tunneling magneto-dielectric(TMD) effects in nano-granularfilms found by our group open new path for room temperature magnetoelectric effects [1]. Our previous report has revealed the essential role of granular distribution in determining thedielectric and TMD properties in uniform granular (UG) Co-MgF2 films[2]. Here, we first proposeda composition-graded granular (CGG) films with an aim to achieve a wide distribution ofinter-granular spacing (s12) between granules and the dielectric and TMD effects were discussed.