Magnetic and transport properties of an epitaxial film of ferromagnetic II-VI diluted magnetic semiconductor ͑DMS͒ Zn 1Ϫx Cr x Te (xϭ0.035) were investigated. The Curie temperature T C of the film was about 15 K, which is the highest among the reported ferromagnetic II-IV DMS. Hall effect measurements at room temperature showed a hole concentration p of about 1ϫ10 15 cm Ϫ3 , which is several orders lower than that reported for carrier-induced ferromagnetic Zn 1Ϫx Mn x Te. These results suggest that a ferromagnetic superexchange interaction between Cr ions is responsible for the observed ferromagnetism in Zn 1Ϫx Cr x Te.
Articles you may be interested inMagnetic properties of heavily Mn-doped quaternary alloy ferromagnetic semiconductor (InGaMn)As grown on InP Appl. Phys. Lett. 83, 2175 (2003); 10.1063/1.1610788 Magnetic and transport properties of III-V based magnetic semiconductor (GaMn)As: Growth condition dependence Appl. Phys. Lett. 74, 398 (1999); 10.1063/1.123082Epitaxial growth and properties of III-V magnetic semiconductor (GaMn)As and its heterostructures
Magneto-optical mode conversion was achieved in a waveguide of diluted magnetic semiconductor Cd1−xMnxTe grown on GaAs substrate. Mode conversion ratio up to 34% under a magnetic field of 5.5 kG was obtained. Cd1−xMnxTe waveguide showed low optical loss, 4 dB/cm, and high magneto-optical figure-of-merit, 15 deg/dB/kG at λ=790 nm. This result shows the feasibility of monolithical integration of an optical isolator with semiconductor optoelectronic devices.
The refractive indices of diluted magnetic semiconductor Cd 1Ϫx Mn x Te films on sapphire substrates have been determined by m-line spectroscopy to precision 0.001 at the wavelengths ϭ670, 785, and 1150 nm. Using these data, we designed double-layer Cd 1Ϫx Mn x Te structures on a GaAs substrate, achieving the integration of the magneto-optical waveguide on a semiconductor substrate. Good optical confinement of the waveguide mode was confirmed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.