Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Reiko Sato Turtelli"'
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The magnetostriction of Co-Ga alloys: Co-14Ga, Co-24Ga and Co-33Ga (atomic), is studied at room temperature for the first time. All three alloys are ferromagnetic. Co-14Ga microstructure is biphasic, a mixture of e (hcp) and α (fcc) phases. Co-24Ga
Autor:
Fabiana Sinibaldi Barbosa, Roland Grossinger, Muhammad Atif, Joao Pedro Serra, Reiko Sato Turtelli, Mateus Botani de Souza Dias, Cristina Bormio-Nunes
Publikováno v:
IEEE Transactions on Magnetics. 52:1-4
The room temperature magnetostriction of polycrystalline Fe100– x Cr x alloys annealed at 800 °C was investigated as a function of Cr content varying from 10 to 30 at.% Cr. All alloys exhibited a single bcc $\alpha $ -Fe–Cr phase with a disorder
Autor:
Dario Bueno-Baques, Anatoliy Glushchenko, R. Grössinger, Ronald F. Ziolo, Reiko Sato-Turtelli, José Andrés Matutes-Aquino, Veronica Corral-Flores
Publikováno v:
IEEE Transactions on Magnetics. 51:1-4
Cobalt ferrite (CoFe2O4) and manganese substituted cobalt ferrite (Co0,25Mn0,75Fe2O4) were synthesized by coprecipitation and sol–gel methods. X-ray diffraction revealed that manganese ions slightly enlarged the crystal lattice with respect to pure
Autor:
Frank Kubel, Atif Muhammad, Martin Kriegisch, R. Groessinger, Reiko Sato Turtelli, Nasir Mehboob, Cristina Grijalva, F. Kneidinger
Publikováno v:
IEEE Transactions on Magnetics. 50:1-5
Hysteresis loops and magnetostriction were measured on ring-shaped ${\rm Fe}_{85}{\rm Ga}_{15}$ samples. The samples were annealed at $T=980^{\circ}{\rm C}$ for 100 h and cooled from annealing temperature in two different ways: one was slowly cooled
Autor:
D. Geist, Cristina Bormio-Nunes, Stephan Sorta, Cristina Grijalva, Reiko Sato-Turtelli, A. Panigrahi, Roland Grössinger, K. T. Tiguman, Michael J. Zehetbauer
Publikováno v:
IEEE Transactions on Magnetics. 50:1-4
The structural and magnetic properties of polycrystalline Fe100-xMnx alloys with x = 38, 42, 46, 50, and 55 atomic percent were investigated after a heat treatment and a cold rolling process. According to X-ray diffraction (XRD), all samples crystall
Autor:
M. Kriegisch, H. Sassik, Frank Kubel, G. Vlasak, Reiko Sato Turtelli, R. Grössinger, N. Mehmood
Publikováno v:
IEEE Transactions on Magnetics. 46:483-486
In this paper, we report magnetostriction measurements and an investigation of structural properties on melt-spun ribbons of Fe85.7Al14.3, Fe81.3Al18.7, and Fe77.7Al22.3 ribbons produced at different wheel speeds. The bcc-disordered A2 structure is o
Autor:
Muhammad Atif, D.T. Alecrim, Carlos Angelo Nunes, R. Grössinger, Cristina Bormio-Nunes, Reiko Sato Turtelli
Publikováno v:
IEEE Transactions on Magnetics. 46:498-501
Longitudinal and transverse magnetostriction measurements were performed on polycrystalline Fe100- xTix alloys, for a large Ti concentration range, from x = 8.8 to 34.7 at.%. Our results showed that substituting Fe by Ti does not significantly enhanc
Autor:
María José Sanzo Pérez, Blanca Hernando, M.L. Sánchez, Jesús Daniel Santos, Roland Grössinger, T. Sánchez, Joan Josep Suñol, Reiko Sato Turtelli, Jose Luis Sanchez Llamazares
Publikováno v:
Materials Science Forum. 635:81-87
We report the effect of a short-time vacuum annealing (1073 K during 10 minutes) on structural phase transition temperatures and magneto-structural properties of as-quenched ribbons of the Heusler alloy Ni50.6Mn34.5In14.9. This alloy crystallizes in
Autor:
H. Sassik, G. Vlasak, M. Kriegisch, Peter Švec, Reiko Sato Turtelli, R. Grössinger, Frank Kubel, N. Mehmood
Publikováno v:
IEEE Transactions on Magnetics. 45:4128-4131
In order to investigate the effect of the quenching rate on the magnetostriction of Fe82.5Ga17.5 alloy, a set of ribbons was prepared by varying the wheel velocities from 7.5 up to 25 m/s. Additionally Fe85Al15, Fe81Al19 and Fe75Al25 ribbons were pre
Autor:
José Trinidad Elizalde Galindo, Roland Grössinger, José Andrés Matutes-Aquino, Reiko Sato Turtelli
Publikováno v:
Advanced Materials Research. 68:122-126
Nanocrystalline YCo5 powders with high coercivity were prepared by mechanical milling and subsequent heat treatment at 820 °C for different annealing times, ta = 2.5, 3.0, 3.5 and 4.5 min, obtaining average crystallite sizes of 17, 19, 32 and 39