Probing local magnetic cluster development in (CuZr)93−xAl7Gdx bulk metallic glasses by 27Al NMR

We report magnetization properties of (CuZr)93−xAl7Gdx bulk metallic glasses from temperature dependent 27Al nuclear magnetic resonance spectroscopy and magnetic susceptibility measurements. Significant non-linear line broadening of 27Al spectra commencing at high temperatures is attributed to the d...

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Bibliographic Details
Published in:	Journal of magnetism and magnetic materials 2012-01, Vol.324 (2), p.173-177
Main Authors:	Sandor, M.T., Xi, X.K., Wang, J.Q., Bai, H.Y., Wang, W.H., Wu, Y.
Format:	Article
Language:	eng
Subjects:	Bulk metallic glass Condensed matter: electronic structure, electrical, magnetic, and optical properties DC susceptibility Domain effects, magnetization curves, and hysteresis Exact sciences and technology Knight shift Magnetic properties and materials Magnetic resonances and relaxations in condensed matter, mössbauer effect Magnetic short-range order Magnetically ordered materials: other intrinsic properties Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Nuclear magnetic resonance Nuclear magnetic resonance and relaxation Physics Saturation moments and magnetic susceptibilities Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
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Summary:	We report magnetization properties of (CuZr)93−xAl7Gdx bulk metallic glasses from temperature dependent 27Al nuclear magnetic resonance spectroscopy and magnetic susceptibility measurements. Significant non-linear line broadening of 27Al spectra commencing at high temperatures is attributed to the development of a local magnetic susceptibility distribution that prevails over a finite temperature range. Magnetization measurements confirm the linewidth enhancement due to strong frustrated magnetic short-range order. This study provides insight into the nature of magnetic development and frustration in paramagnetic systems. ► NMR and magnetization experiments used to study Gd-bearing metallic glasses. ► Non-linear NMR linewidth caused by a magnetic susceptibility distribution. ► Development of magnetic short-range order at high temperatures. ► Magnetic short-range order anti-ferromagnetic and frustrated. ► Gd-bearing metallic glasses paramagnetic at low temperatures.
ISSN:	0304-8853