3 research outputs found
Exchange Biasing of the Ferromagnetic Semiconductor (Ga,Mn)As by MnO
We provide an overview of progress on the exchange biasing of a ferromagnetic
semiconductor (Ga1-xMnxAs) by proximity to an antiferromagnetic oxide layer
(MnO). We present a detailed characterization study of the antiferromagnetic
layer using Rutherford backscattering spectrometry, x-ray photoelectron
spectroscopy, transmission electron microscopy, and x-ray reflection. In
addition, we describe the variation of the exchange and coercive fields with
temperature and cooling field for multiple samples.Comment: To appear in J. Appl. Phys. (invited paper in Proceedings of the 49th
Annual Conference on Magnetism & Magnetic Materials); pdf file onl
Anthropology, Brokerage and Collaboration in the development of a Tongan Public Psychiatry: Local Lessons for Global Mental Health
The Global Mental Health (GMH) movement has revitalised questions of the translatability of psychiatric concepts and the challenges of community engagement in countries where knowledge of the biomedical basis for psychiatric diagnosis is limited or challenged by local cultural codes. In Tonga, the local psychiatrist Dr Puloka has successfully established a publicly accessible psychiatry that has raised admission rates for serious mental illness and addressed some of the stigma attached to diagnosis. On the basis of historical analysis and ethnographic fieldwork with healers, doctors and patients since 1998, this article offers an ethnographic contextualization of the development and reception of three key interventions during the 1990s inspired by traditional healing and reliant on the translation of psychiatric terms and diagnosis. Dr Puloka’s use of medical anthropological and transcultural psychiatry research informed a community engaged brokerage between the implications of psychiatric nosologies and local needs. As such it reveals deficiencies in current polarised positions on the GMH project and offers suggestions to address current challenges of the Global Mental Health movement