Zobrazeno 1 - 10
of 281
pro vyhledávání: '"Grandi T"'
Autor:
Machado, K. D., da Silva, R. C., de Lima, J. C., Grandi, T. A., Gasperini, A. A. M., Campos, C. E. M.
Three amorphous Co$_x$Nb$_{100-x}$ alloys, Co$_{25}$Nb$_{75}$, Co$_{57}$Nb$_{43}$ and Co$_{80}$Nb$_{20}$, were produced by Mechanical Alloying starting from the elemental powders. Their magnetic properties were determined using an alternating gradien
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402014
The short and intermediate range order of an amorphous GeSe$_4$ alloy produced by Mechanical Alloying were studied by Reverse Monte Carlo simulations of its x-ray total structure factor and Raman scattering. The simulations were used to compute the $
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402015
We have investigated the local atomic structure of amorphous TM-Ti alloys (TM = Co, Ni, Cu) produced by Mechanical Alloying by means of EXAFS analyses on TM and Ti K-edges. Coordination numbers and interatomic distances for the four alloys where foun
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402013
Autor:
Machado, K. D., de Lima, J. C., Grandi, T. A., Gasperini, A. A. M., Maurmann, C. E., Souza, S. M., Campos, C. E. M., Pimenta, A. F.
The crystalline structures of superionic high temperature copper selenides Cu$_{2-x}$Se ($0 \le x \le 0.25$) produced by Mechanical Alloying were investigated using X-ray diffraction (XRD) technique. The measured XRD patterns showed the presence of t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402012
We have investigated the local atomic structure of an amorphous Co$_{57}$Ti$_{43}$ alloy produced by Mechanical Alloying by means of x-ray diffraction and EXAFS analyses on Co and Ti K-edges. Coordination numbers and interatomic distances where found
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307375
The local atomic order of an amorphous Ga$_{50}$Se$_{50}$ alloy produced by Mechanical Alloying (MA) was studied by the Extended X-ray Absorption Fine Structure (EXAFS) and X-ray Diffraction (XRD) techniques and by Reverse Monte Carlo (RMC) simulatio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304666
The short and intermediate range order of an amorphous Ge$_{30}$Se$_{70}$ alloy produced by Mechanical Alloying were studied by Reverse Monte Carlo simulations of its x-ray total structure factor, Raman scattering and differential scanning calorimetr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304665
The aging of a nanocrystalline equiatomic ZnSe alloy produced by mechanical alloying was investigated using X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques. The measured XRD patterns showed that Se atoms located at inte
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212322
Autor:
de Lima, J. C., Machado, K. D., Grandi, T. A., de Campos, C. E. M., Raoux, D., Tonnerre, J. M., Udlon, D., Morrison, T. I.
The local atomic structure of an amorphous NiZr2 alloy was investigated using the anomalous wide-angle x-ray scattering (AWAXS), differential anomalous scattering (DAS) and reverse Monte Carlo (RMC) simulations techniques. The AWAXS measurements were
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212168
The hcp-fcc transformation induced in cobalt powder by ball milling at room temperature was studied using the excess Gibbs free energy for the metals, in nanometric form, to calculate the activation energy that the atoms need for the phase transforma
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010415