We report a combination of analytical transmission electron microscopy, small angle neutron scattering, and studies of magnetic properties of the glass-forming alloy These investigations show the existence of an in situ formed finely dispersed nanocrystalline Nd-rich phase embedded in a Fe-rich glassy matrix of a bulk sample. The crystalline phase forms an extended network over the whole sample but its volume fraction is small compared to that of compact phase. Small angle neutron scattering data exhibit power law behavior with an exponent of −2.5 indicating the formation of a mass fractal. The microstructure observed may be related to phase separation in the undercooled liquid which induces a microstructure that can explain the hard magnetic behavior of such an intrinsic composite.
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11 March 2002
Research Article|
March 11 2002
Microstructure-controlled magnetic properties of the bulk glass-forming alloy
S. Schneider;
S. Schneider
I. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
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A. Bracchi;
A. Bracchi
I. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
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K. Samwer;
K. Samwer
I. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
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M. Seibt;
M. Seibt
IV. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
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P. Thiyagarajan
P. Thiyagarajan
Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne, Illinois 60439
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Appl. Phys. Lett. 80, 1749–1751 (2002)
Article history
Received:
October 31 2001
Accepted:
January 16 2002
Citation
S. Schneider, A. Bracchi, K. Samwer, M. Seibt, P. Thiyagarajan; Microstructure-controlled magnetic properties of the bulk glass-forming alloy . Appl. Phys. Lett. 11 March 2002; 80 (10): 1749–1751. https://doi.org/10.1063/1.1458070
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