Bulk　anisotropic　nanocrystalline　SmCo5　magnets　have　been　prepared　by　hot　deformation　method.　The　height　reduction　of　the　magnets　plays　a　key　role　in　inducing　the　crystallographic　alignment　in　the　magnet.　Increase　of　height　reduction　to　90%　leads　to　the　formation　of　platelet　shape　grains　perpendicular　to　the　press　direction;　correspondingly　c-axis　crystallographic　texture　and　magnetic　anisotropy　were　developed　in　the　deformed　magnets.　The　coercivity　of　the　magnets　increases　first,　and　then　decreases　again　with　the　increase　of　the　height　reduction.　The　magnet　with　70%　height　reduction　exhibits　a　high　coercivity　over　5　T.　(C)　2011　American　Institute　of　Physics.　[doi:　10.1063/1.3553933]