https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40643 Wed 10 Aug 2022 13:42:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45389 2O₃ films were deposited using a pulsed laser deposition system. X-ray diffraction and transmission electron microscopy analysis show that the films deposited under oxygen partial pressures of 10^–3 and 10^–5 Torr are uniform without clusters or secondary phases. However, the film deposited under 10^–7 Torr has a Fe-rich phase at the interface. Magnetic measurements demonstrate that the magnetization of the films increases with decreasing oxygen partial pressure. Muon spin relaxation (μSR) analysis indicates that the volume fractions of the ferromagnetic phases in PO₂ = 10^–3, 10^–5, and 10^–7 Torr-deposited samples are 23, 49, and 68%, respectively, suggesting that clusters or secondary phases may not be the origin of the ferromagnetism and that the ferromagnetism is not carrier-mediated. We propose that the formation of magnetic bound polarons is the origin of the ferromagnetism. In addition, both μSR and polarized neutron scattering demonstrate that the Fe-rich phase at the interface has a lower magnetization compared to the uniformly distributed phases.]]> Tue 08 Nov 2022 09:39:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40103 2 is used to study its magnetic properties. In detail, single crystal WSe₂ is codoped with 4 at% Co and various concentrations of Nb by employing the physical ion implantation method. Raman, X-ray diffraction and X-ray photoelectron spectroscopy results reveal the effective substitutional doping of implanted elements (Co and Nb). Magnetic measurements illustrate that both un-doped and 4 at% Co doped WSe₂ show weak ferromagnetism whereas magnetization is strongly enhanced when Co and Nb are codoped into WSe₂. The magnetization is comparable with a ferromagnet, which may be attributed to Co, Nb doping and defects. In addition, a large coercivity of ≈1.2 kOe is observed in the 1 at% Nb–4 at% Co codoped WSe₂ sample, which may be ascribed to the combined effect of doping-induced stress, defect-dictated pinning and anisotropy of Nb-Se bond owing to the charge transfer between Nb and Se ions.]]> Tue 05 Jul 2022 11:09:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34330 bis(thiosemicarbazone) complex, Cu^II (atsm), is beneficial in acute brain injury, in preclinical mouse models of ischemic stroke. We demonstrate that the copper complex Cu^II (atsm) protects neurons from excitotoxicity and N2a cells from OGD in vitro, and is protective in permanent and transient ischemia models in mice as measured by functional outcome and lesion size. Copper delivery in the ischemic brains modulates the inflammatory response, specifically affecting the myeloid cells. It reduces CD45 and Iba1 immunoreactivity, and alters the morphology of Iba1 positive cells in the ischemic brain. Cu^II(atsm) also protects endogenous microglia against ischemic insult and reduces the proportion of invading monocytes. These results demonstrate that the copper complex Cu^II(atsm) is an inflammation-modulating compound with high therapeutic potential in stroke and is a strong candidate for the development of therapies for acute brain injury.]]> Thu 17 Mar 2022 14:35:40 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49715 Mon 29 May 2023 14:52:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49263 Mon 08 May 2023 13:37:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50823 Fri 18 Aug 2023 11:02:55 AEST ]]>