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Fabrication and Characterization of SmCo5/Fe65Co35 and SmCo5/Fe Composite Spring Exchange Magnets |
| F. Shahzad1, S. A. Siddiqi1, J. Zhou2 |
| 1Centre for Solid State Physics, University of the Punjab, Lahore-54590, Pakistan2Department of Physics, University of California, Berkeley, California-94720, USA |
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| Cite this article: |
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F. Shahzad, S. A. Siddiqi, J. Zhou 2008 Chin. Phys. Lett. 25 2642-2644 |
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Abstract SmCo5/Fe65Co35 and SmCo5/Fe spring exchange magnets are fabricated by dc magnetron sputtering on MgO substrates and 100-nm-thick Si3N4 membranes, respectively. The base pressure of sputtering chamber is kept below 10-7 Torr, and Ar pressure is 3 to 8mTorr. The samples are characterized by an x-ray diffractometer, a superconducting quantum interference magnetometer, and high resolution magnetic soft x-ray microscopy. We obtain the complete exchange coupling and single phase behaviour of composite magnets. The (BH)max value achieved is 28.8MGOe.
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| Keywords:
75.75.+a
68.65.Ac
75.30.Gw
07.85.Tt
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Received: 16 January 2008
Published: 26 June 2008
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