S . M . Bennett

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Marginal coral reef systems may provide valuable insights into the nature of ecosystem processes in systems on the trajectory towards a phase shift to an alternate ecosystem state. This study investigates the process of herbivory in a marginal coral reef system in the Keppel Islands at the southern end of the Great Barrier Reef. Branching Acropora coral and(More)
P-type conducting layers are critical in GaN-based devices such as LEDs and laser diodes. Such layers are often produced by doping GaN with Mg, but the hole concentration can be enhanced using AlGaN/GaN p-type superlattices by exploiting the built-in polarisation fields. A Mg-doped AlGaN/GaN superlattice was studied using SIMS. Although the AlGaN and GaN(More)
We report progress with the development of a real-time, 32 element, synthetic aperture acoustic imaging system. Construction and testing of the system hardware is now complete, enabling us to acquire raw acoustic data and focus and display it with a frame rate of 30 Hz . Performance of the system is currently being assessed. Images of wire targets indicate(More)
We present contemporaneous optical and infrared photometric observations of the type IIn SN 1998S covering the period between 11 and 146 days after discovery. The infrared data constitute the first ever infrared light curves of a type IIn supernova. We use blackbody and spline fits to the photometry to examine the luminosity evolution. During the first 2–3(More)
Co/Fe multilayers were electron-beam evaporated in ultrahigh vacuum onto quartz substrates keeping the Co layer thickness ~10 nm! constant and changing that of Fe ~10–30 nm!. For Fe layer thicknesses up to 24 nm, the magnetization substantially lies in the film plane and shows a uniaxial magnetic anisotropy. The coercive field measured along the easy axis(More)
Co/Fe multilayers with different layer thickness formed by electron beam evaporation in ultrahigh vacuum have been investigated by grazing incidence x-ray reflectivity ~GIXRR! and alternating gradient force magnetometry. The interface thicknesses are lower than GIXRR uncertainty ~;1 nm!, favoring a strong magnetic exchange interaction between the layers(More)