Metastable, epitaxial PrCo7 films with high energy product
Metastable, epitaxial PrCo7 films with high energy product
Patra, A. K.; Neu, V.; Fähler, S.; Grötzschel, R.; Schultz, L.
Epitaxial PrCo films with a nominal composition of Pr2Co17 have been prepared on a Cr buffered MgO (110) substrate. Pole figures and magnetic measurements reveal that these PrCo films crystallize in a metastable disordered hexagonal PrCo7 phase (TbCu7 type) rather than an ordered rhombohedral Pr2Co17 phase (Th2Zn17 type). Consequently high uniaxial anisotropy at room temperature is observed instead of the planar anisotropy expected for the rhombohedral phase. The energy density obtained in the nonequilibrium PrCo films is (BH)max=277 kJ/m3, which exceeds the (BH)max values of single phase SmCo films and SmCo/Fe and PrCo/Co multilayers.
- Applied Physics Letters 89(2006), 142512
Permalink: https://www.hzdr.de/publications/Publ-8908
Publ.-Id: 8908