Investigations of the properties of Zn1−xCrxO thin films grown by RF magnetron sputtering

Properties of Ni doped and Ni–Ga co-doped ZnO thin films prepared by pulsed laser deposition

“…In 2000, Dietl et al [4] theoretically predicted that the T c of ZnO and GaN based compounds could be raised up to room temperature within a mean-field picture. Since then, intense interest has been focused on ZnO doped with a variety of transition metals (TM) [5][6][7][8][9][10][11][12][13][14][15][16][17]. Among all known TM doped ZnO systems, Ni-based materials are probably the most controversial [18][19][20][21][22][23].…”

Microstructural and optical properties of ZnO/(Ni) thin films prepared by DC magnetron sputtering

“…On the other hand, when doped with transition metals, dilutes magnetism was observed in ZnO besides its excellent photoelectric properties. As a result, ZnO-based dilutes magnetic semiconductors (DMSs) have been widely studied due to their application for magneto electronic and spintrinic devices [1][2][3][4]. Recently, Pavle and Daniel have reported the high-T c ferromagnetism in nanocrystalline Ni 2+ :ZnO [3].…”

Effects of substrate temperature on the structural and magnetic properties in Cr-doped ZnO films prepared by magnetron sputtering

“…Although room-temperature FM has been found [14,15], there are still some reports indicating no sign of FM [16,17], or attributing to the secondary phase. Until now, no consensus has been constructed concerning the origin.…”