Magnetic properties of Mn-doped transparent CuAlO2 semiconductor

A Review on Cu<SUB>2</SUB>O and Cu<SUP>I</SUP>-Based <I>p</I>-Type Semiconducting Transparent Oxide Materials: Promising Candidates for New Generation Oxide Based Electronics

“…5 Therefore, these types of layered-structured p-TCOs are inherently providing the anisotropic environment to the charge carriers and phonons to have suppressed scattering, and hence better thermoelectric properties. 281 282 Apart from photovoltaic, transparent electronic, vacuum microelectronic and thermoelectric related applications, Cu I -based p-types oxides are reported to have some very interesting and diverse properties and applications in magnetic, catalytic, photocatalytic, photoelectrochemical, gas sensing, superconducting, hydrogen generation and self-cleaning [283][284][285][286][287][288][289][290][291][292][293][294][295][296][297][298][299][300][301] properties. Therefore, it will not be an exaggeration to say that next decade will see the renaissance of Cu I -based p-type oxides and p-TCOs for various novel technological applications.…”

Optical bandgap modulation and magnetic characterization of Fe-doped CuCrO2 nanopowders

“…Firstly, the optical bandgap (E g ) may be modulated via Fe-doping as mentioned above, which has been seldom reported for CuCrO 2 and thus will offer reference data to the synthesis of transparent electronic devices. Secondly, it was reported that 3d-transition-metal-doped p-type delafossite oxides were potential dilute magnetic semiconductors (DMSs) [5][6][7]. Our preliminary work has shown low-temperature ferromagnetism of Fe-doped CuCrO 2 .…”

Evidence of room temperature ferromagnetism in Co-doped transparent CuAlO2 semiconductor

“…We found both lattice parameters a and c to increase slightly from 2.856 to 2.864Å and 16.850 to 16.943Å, respectively, as the concentration of Co is increased from 0 to 7 at.%. We used X-ray photoelectron spectroscopy (XPS) to determine that the Co was in the +2 oxidation state, since the radius of Co 2+ (0.58Å) [18] is always smaller than that of Cu 1+ (0.95Å) but slightly larger than that of Al 3+ (0.55Å) [13]. As such, the decrease of c could be detected if Co ions were substituted at the Cu sites.…”

“…This finding suggests that the delafossite CuAlO 2 phase has the advantage of possessing two cation sites, Cu 1+ and Al 3+ , for possible magnetic ion substitution. Subsequently, magnetic properties of Mn-doped transparent CuAlO 2 semiconductors have been discussed [13]. In addition, theoretical first-principles calculations based on CuAlO 2 show that the ferromagnetic states * Corresponding author.…”