Spin Reorientation Transition and Exotic Magnetism in Dilute Gd1-xYx Single Crystals (x &lt; 0.1) Revealed by A.C. Magnetoresistance Studies

João A.M. Santos; João Bessa Sousa; João P. Araújo; F. Correia; J.F. Collingwood; S.B. Palmer

doi:10.4028/www.scientific.net/MSF.514-516.309

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HomeMaterials Science ForumMaterials Science Forum Vols. 514-516Spin Reorientation Transition and Exotic Magnetism...

Spin Reorientation Transition and Exotic Magnetism in Dilute Gd_1-xY_x Single Crystals (x < 0.1) Revealed by A.C. Magnetoresistance Studies

Abstract:

We measured dilute Gd1-xYx single crystals (x < 0.1) samples using an a.c. magnetoresistance technique. This technique consists in applying a constant current to the sample and measuring the temperature dependent a.c. voltage under a time modulated external magnetic field (f = 333 Hz). The a.c. voltage signal is decomposed in real and imaginary components or, alternatively, in amplitude and phase signals relative to the a.c. magnetic field. This technique proved to be extremely sensitive and effective to display all the magnetic phase transitions revealed by the previous d.c. transport measurements, plus an additional spectrum of other critical features.

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

309-313

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.309

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Online since:

May 2006

Authors:

João A.M. Santos, João Bessa Sousa, João P. Araújo, F. Correia, J.F. Collingwood, S.B. Palmer

Keywords:

Magnetic Phase Transition, Rare-Earth Magnetism

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References

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