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We study the effect of the shape anisotropy on the magnetic domainconfigurations of a ferromagnetic semiconductor (Ga,Mn)As/GaAs(001) epitaxialwire as a function of temperature. Using magnetoresistance measurements, wededuce the magnetic configurations and estimate the relative strength of theshape anisotropy compared with the intrinsic anisotropies. Since the intrinsicanisotropy is found to show a stronger temperature dependence than the shapeanisotropy, the effect of the shape anisotropy on the magnetic domainconfiguration is relatively enhanced with increasing temperature. Thisinformation about the shape anisotropy provides a practical means of designingnanostructured spin electronic devices using (Ga,Mn)As.Comment: 4 pages, 4 figures, to appear in J. Appl. Phy

Effect of the shape anisotropy on the magnetic configuration of (Ga,Mn)As and its evolution with temperature