The　microstructure,　crystal　structure　and　magnetic　properties　were　studied　for　Sm0.6Pr0.4Co5　nanollakes　prepared　by　surfactant-assisted　high-energy　ball　milling　(SAHEBM).　Effect　of　ball-milling　time　on　the　c-axis　crystallographic　alignment,　morphology　and　magnetic　properties　of　Sm0.6Pr0.4Co5　nanollakes　was　systematically　investigated.　With　increasing　milling　time　from　1　h　to　7　h,　the　intensity　ratio　between　(002)　and　(111)　reflection　peaks　indicating　degree　of　c-axis　crystal　texture　of　the　(Sm,　Pr)Co-5　phase　increases　first,　peaks　at　3　h,　then　drops　again,　revealing　that　the　strongest　c-axis　crystal　texture　was　obtained　in　the　nanoflakes　milled　for　3　h.　On　the　other　hand,　the　coercivity　(H-ci)　of　the　flakes　increases　gradually　from　1.71　to　14.65　kOe　with　the　increase　of　ball　milling　time.　As　a　result,　an　optimal　magnetic　properties　of　M-r　10.23　kGs,　H-cl　of　11.45　kOe　and　(BH)(max)　of　24.40　MGOe　was　obtained　in　Sm0.6Pr0.4Co5　nanoflakes　milled　for　3　h,　which　also　displayed　a　high　aspect　ratio,　small　in-plane　size,　pronounced　(001)　out-of-plane　texture.　(C)　2015　Elsevier　B.V.　All　rights　reserved.