Room-temperature ferromagnetic Co-doped ZnO nanoneedle array prepared by pulsed laser deposition

Abstract

Room-temperature ferromagnetism in (Mn, N)-codoped ZnO thin films prepared by reactive magnetron cosputtering Appl.

The Effects of the Thermal Treatment on the Structural and Magnetic Properties of Zn–Co Alloys Prepared by Electrochemical Deposition

“…Figure 5a shows the hysteresis loops for the Zn-Co alloy films before and after thermal treatment at 4.5 V applied voltage. hysteresis loop was observed with a coercivity of 167 Oe before and 195 Oe after thermal treatment which is much higher than those generally reported [19,23,24]. The changes in the shape of χ(H ) curves reflect changes in magnetization processes.…”

Antiferromagnetic coupling in Co-doped ZnS

“…There have been many reports on roomtemperature ferromagnetism for wide bandgap semiconductor doped with a few percent of 3d transition-metal ions. The host materials for the DMS have been ZnO [1,[4][5][6], ZnS [2,[7][8][9][10][11][12], TiO 2 [13,14], SnO 2 [15,16], GaAs [17], AlN [18], and GaN [19]. TM-doped DMS materials always suffer from problems such as formation of secondary phase and/or clusters [2].…”

Influence of growth temperature on morphological, structural and photoluminescence properties of ZnO nanostructure thin layers and powders deposited by thermal evaporation

“…Finally, it is a promising material for various electronics and optoelectronics purposes including solar cells (Baxtera and Aydil 2006), gas sensors (Oh et al 2009), optoelectronic devices (Suehiro et al 2006), field-emission devices (Wei et al 2007a), light-emitting diodes (Guo et al 2009), etc. ZnO nanostructures have been synthesized by various methods such as thermal evaporation (Abdulgafour et al 2010), sol-gel , * Author for correspondence (h_eshghi@shahroodut.ac.ir) metal organic chemical vapour deposition (Kar et al 2010), spray pyrolysis (Dedova et al 2007), pulsed laser deposition (Chen et al 2005), etc. The growth temperature is one of the key parameters which ought to be considered before employing ZnO nanostructures in various applications.…”