Solubility limits of manganese in InSb under equilibrium and nonequilibrium synthesis conditions

Magnetic properties of Mn-doped InSb nanowires from first principles

“…For instance, at lower concentrations, Mn doped InSb homogeneous films can lead to a carrier-mediated ferromagnetism at temperatures below 20 K [19,20], but their Curie temperature (T C ) is much lower than 300K. At higher concentrations, the ferromagnetism with a T C exceeding 300K was observed in bulk InSb:Mn [21,22], this magnetic behavior is attributed to non-interacting MnSb precipitates rather than the hole-mediated ferromagnetism. With the advancements in nano lithographic fabrication and numerical computation methods, it has become feasible to develop DMS nanostructures.…”

Room-Temperature Ferromagnetism in InSb-Mn Nanowires

“…When the concentration of dopant in the InSb structure is very low, Mn atoms substitute In sites in a crystal lattice, leading to a carrier-mediated ferromagnetism at temperatures below 20 K. 9 At higher concentrations, dopants form clusters of atomic scale Mn embedded in the InSb host, what usually leads to an increasing T C . Upon a further increase of concentration of dopant, a formation of separate crystal phases, namely, MnSb (T C bulk = 587 K) 10 and/or Mn 2 Sb (T C bulk, hexagonal = 363 K, T C bulk, tetragonal = 546−550 K), 11 can occur. 12 Those additional phases are suspected of causing a magnetic response of the InSb-Mn system at and above room temperature.…”