Contact


Dr. Volker Neu

phone:     +49-351-4659-237
fax:         +49-351-4659-541
e-mail: v.neu(at)ifw-dresden.de

Epitaxial growth of RECo5 films


Depending on the applied substrate / buffer combination, we are able to prepare the hexagonal RECo5 phase as an epitaxial film with three different orientations of the phase's crystallographic c-axis. This allows to study anisotropic magnetic properties in fully textured films with uniaxial in-the-plane anisotropy such as large rectangular hysteresis in single layer films (SmCo5, PrCo7) or multilayers (SmCo5/Fe), magnetization processes in perpendicular magnetic anisotropy films (SmCo5), or spin reorientation transitions in e.g. NdCo5. Uniaxial in-plane anisotropy is achieved on MgO(110) single crystal substrates with a Cr(211) buffer. This epitaxial mode also is also possible with Fe (211) layers in hard/soft heterostructures. A perpendicular orientation of the c-axis with a single epitaxial variant in the basal plane is achieved on Ru-buffered Al2O3 (0001).

 

For the epitaxial growth conditions of the different texture variants see: 

  • A. Singh, V. Neu, R. Tamm, K. Subba Rao, S. Fähler, B. Holzapfel, W. Skrotzki, L. Schultz, Growth of epitaxial SmCo5 films on Cr/MgO(100), Appl. Phys. Lett. 87, 072505 (2005).
  • A. Singh, V. Neu, R. Tamm, K. Rao, S. Fähler, W. Skrotzki, L. Schultz, B. Holzapfel, Pulsed laser deposited epitaxial Sm-Co thin films with uniaxial magnetic texture, J. Appl. Phys. 99, 08E917 (2006).
  • M. Seifert, V. Neu, L. Schultz, Epitaxial thin SmCo5 films with perpendicular anisotropy, Appl. Phys. Lett. 94, 022501 (2009).