Paramagnetic behavior at room temperature of Zn1−xMnxTe nanocrystals grown in a phosphate glass matrix by the fusion method

Solubility limit of Mn2+ ions in Zn1−x Mn x Te nanocrystals grown within an ultraviolet-transparent glass template

“…xMn (wt% of Zn)] was synthesized by the fusion method. This method consists of two sequential melting-nucleation processes which produce ensembles of nearly spherical nanoparticles embedded in a glass matrix, as described elsewhere (Dantas et al 2010(Dantas et al , 2012aSilva et al 2015Silva et al , 2016. The first step of sample preparation involved melting of powder mixtures of the precursor materials at 1300°C for 30 min in an alumina crucible and in an appropriate reducing atmosphere.…”

“…concentration range, it is possible to modulate the morphological, structural, magnetic, and optical properties of the assynthesized DMS nanostructures by varying Mn concentration and using the employed synthesis protocol. Recently, we examined the effect of Mn concentration on the magnetic properties of Zn 1-xMn x Te NCs (Silva et al 2015). In that study, electron paramagnetic resonance (EPR) exhibited the wellknown hyperfine sextet that is characteristic of Mn 2?…”

“…ions and showed the presence of these ions within and near the surface of the ZnTe NCs at low concentrations (x \ 0.100). The present study reports on the preparation and investigation of the morphological, structural, and optical properties of nanosized Zn 1-x Mn x Te DMS (the same group of samples as in Silva et al 2015) embedded in a glassy system with a wider Mn concentration range (x = 0.000-0.800). According to the literature, the Mn 2?…”

Diluted Magnetic Semiconductors Nanocrystals: Saturation and Modulation

“…The incorporation of magnetic ions into the crystal structure of ZnTe semiconductor nanocrystals, which grow in glassy systems, has become very interesting due to the various applications in spintronics are governed by sp-d spin interaction between carriers and magnetic ions [25]. Some possible applications require nanoparticles to be embedded in highly stable, robust, and transparent host materials, as glassy systems [26]. The present study reports on the investigation of the solubility/saturation of Mn 2+ ions in Zn 1-x Mn x Te [13,26,27] and competition between Co 2+ and Mn 2+ ions into Zn 0.99-x Mn 0.01 Co x Te [14,28] nanosized DMS embedded in a glassy system with a wider Mn/Co concentration range (x = 0.000-0.800).…”

“…Some possible applications require nanoparticles to be embedded in highly stable, robust, and transparent host materials, as glassy systems [26]. The present study reports on the investigation of the solubility/saturation of Mn 2+ ions in Zn 1-x Mn x Te [13,26,27] and competition between Co 2+ and Mn 2+ ions into Zn 0.99-x Mn 0.01 Co x Te [14,28] nanosized DMS embedded in a glassy system with a wider Mn/Co concentration range (x = 0.000-0.800). According to the literature, the Mn 2+ /Co 2+ ion can be thermodynamically incorporated into II-VI semiconductors up to its solubility limit [29,30].…”