Writers: A. W. Arins; H. F. Jurca; J. Zarpellon; J. Varalda; I. L. Graff1; A. J. A. de Oliveira; W. H. Schreiner; and D. H. Mosca.
Keywords: ultra-thin films; magnetization
Abstract: We report on high quality MnGa epilayers directly grown on GaAs(111)-(1 × 1) reconstructed surface. MnGa layers are characterized by the stacking of (111) planes of tetragonal zinc-blende structure, which are rotated by 11° with respect to the underlying (111) planes of the GaAs lattice. These ultra-thin MnGa epilayers with lattice parameters a = 0.55 nm and c = 0.61 nm are stabilized for thickness between 5 and 20 nm with a net magnetic moment of 3.2 μB per Mn atom. These epilayers are potentially suited for semiconductor spintronics applications due to the reversal of its magnetization in relatively low magnetic fields.
O CDMF é um dos Centros de Pesquisa, Inovação e Difusão (CEPID) apoiados pela FAPESP. O Centro também recebe investimento do CNPq, a partir do Instituto Nacional de Ciência e Tecnologia dos Materiais em Nanotecnologia (INCTMN).
Writers: Alessandra Alves Correa; Roger Gonçalves; Rodrigo Pereira; Ernesto Chaves Pereira Keywords: conducting polymers; electrochemistry; properties and characterization Abstract: The effect of the electropolymerization of seven poly(3-methylthiophene) (P3MT) films in the same used monomer solution have been investigated. […]
Writers: S. Sergeenkov and C. Córdova and L. Cichetto Jr. and O.F. de Lima and E. Longo and F.M. Araújo-Moreira Keywords: Carbon-cobalt nanocomposite; Thin films; Resistance; Polaron hopping; Magnetic scattering Abstract: We study the transport properties of C1−xCox thin films (with […]
Writers: L. V. Costa, Maria G. Ranieri, Mario Cilense, Elson Longo, Alexandre Z. Simões Keywords: magnetoelectric coupling; bismuth ferrite; thin films grown Abstract: Magnetoelectric coupling was observed at room temperature in calcium modified bismuth ferrite BiFeO3 (BFO) thin films deposited […]