Magnetoresistance of nanocrystalline Co-AlN films

Tunneling magnetoresistance in ensembles of ferromagnetic granules with exchange interaction and random easy axes of magnetic anisotropy

“…However, in a number of different granular ferromagnetic materials negative MR continue to grow even when magnetization is almost saturated. Similar behavior was observed in granular magnetic oxides [17][18][19][20], nanoclusters of ferromagnetic metals [21][22][23] and in some other materials [24][25][26] including Mn-doped semiconductors [27]. Usually, this MR is ascribed to existence of 'anti-boundaries', the spins aligned against the main magnetization direction on the edge of granules [17,24,28,29].…”

“…TMR is effectively decoupled from the magnetization and can even change its sign becoming positive at low field. The decoupling of MR from magnetization was observed in a number of different granular magnetic materials [17][18][19][20][21][22][23][24][25][26][27]. Most often it was ascribed to the so-called 'antiboundaries'.…”

Tunneling magnetoresistance in ensembles of ferromagnetic granules with exchange interaction and random easy axes of magnetic anisotropy

“…However, in a number of different granular ferromagnetic materials negative MR continue to grow even when magnetization is almost saturated. Similar behavior was observed in granular magnetic oxides [17][18][19][20], nanoclusters of ferromagnetic metals [21][22][23] and in some other materials [24][25][26] including Mn-doped semiconductors [27]. Usually, this MR is ascribed to existence of "antiboundaries", the spins aligned against the main magnetization direction on the edge of granules [28,29].…”

“…TMR is effectively decoupled from the magnetization and can even change its sign becoming positive at low field. The decoupling of magnetoresistance from magnetization was observed in a number of different granular magnetic materials [17][18][19][20][21][22][23][24][25][26][27]. Most often it was ascribed to the so-called "anti-boundaries".…”

Microstructure and magnetoresistance effect of Fe–Ag granular films without any heat treatment

“…Magnetic granular films have attracted much attention because of their good magnetoresistance properties and convenient preparation technologies in the last two decades [1][2][3][4]. The magnetic granular films, in which magnetic particles are embedded in the non-magnetic matrix, display a giant magnetoresistance (GMR) effect which is similar to that observed in magnetic multilayers [5,6].…”