The Development Of Nanocrystalline Fe73.5cu1nb3si13.5b9: Magnetism And Structural Disorder

In order to study the effect of the initial degree of topological disorder on the formation of the nanocrystalline state, two amorphous ribbons of composition Fe73.5Cu1Nb3Si13.5B9 produced in different laboratories were investigated. Measurements of hysteresis loops, disaccommodation and magnetostriction were performed on as-cast and nanocrystalline samples. An analytically solvable model describing the stress dependence of the coecivity is discussed. Two types of analysis of the approach to saturation are used to estimate the distribution function of the magnetization vectors. From the pinning field, the dimension of long-range order stresses in the nanocrystalline state is deduced. © 1994.1341112Yoshizawa, Oguma, Yamauchi, (1988) J. Appl. Phys., 64, p. 6044Herzer, (1992) J. Magn. Magn. Mater., 112, p. 258Gleiter, Nanocrystalline materials (1989) Progress in Materials Science, 33 (4)Herzer, (1989) IEEE Trans. Magn., 25, p. 3327Knobel, Sato Turtelli, Rechenberg, (1992) J. Appl. Phys., 71, p. 6008Schäfer, Hubert, Herzer, Domain observation on nanocrystalline material (1991) Journal of Applied Physics, 69, p. 5325Grössinger, Wazulek, Sassik, The influence of the magnetostriction on the coercivity of amorphous ribbons (1990) Journal of Magnetism and Magnetic Materials, 83, p. 351Kersten, (1943) Z. Phys., 44, p. 63Allia, Luborsky, Soardo, Sato Turtelli, Vinai, Magnetic relaxation in amorphous ribbons prepared with different quenching rates (1981) IEEE Transactions on Magnetics, 17, p. 2615Sato Turtelli, Vinai, (1990) Rev. Bras. Fis., 20, p. 203Narita, Yamasaki, Fukunaga, (1980) IEEE Trans. Magn., 16, p. 435Allia, Vinai, (1982) Phys. Rev. B, 26, p. 6141Allia, Vinai, (1986) Phys. Rev. B, 33, p. 422Allia, Vinai, (1981) IEEE Trans. Magn., 17, p. 1481Kronmüller, Theory of magnetic after-effects in ferromagnetic amorphous alloys (1983) Philosophical Magazine Part B, 48, p. 127Kronmüller, Moser, Rettenmeier, Micromagnetic analysis of magnetic after-effects in amorphous alloys by two-level systems (1984) IEEE Transactions on Magnetics, 20, p. 1388Kronmüller, (1981) Atomic Energy Rev. Suppl., 1, p. 255Vazquez, Fernengel, Kronmüller, (1989) Phys. Stat. Solidi (a), 115, p. 547J. Gonzales, M. Vazquez, E. T. de Lacheisserie and G. Herzer, unpublishedPolak, Grössinger, Holubar, Knobel, Sato Turtelli, Sassik, Determination of the Quenched-In State of Amorphous Ribbons Applying the Law of Approach to Saturation (1993) Key Engineering Materials, 81-83, p. 239Stoner, Wohlfarth, A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys (1948) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 240 A, p. 599Zhao-Hua, Dao-Sheng, (1981) J. Appl. Phys., 52, p. 1923Allia, Beatrice, Vinai, Knobel, Sato Turtelli, (1991) Appl. Phys. Lett., 59, p. 245