Traditional　approaches　for　increasing　the　intrinsic　coercivity　of　magnets　typically　come　at　the　expense　of　remanence,　a　dilemma　known　as　intrinsic　coercivity-remanence　trade-off,　leading　to　a　substantial　reduction　of　maximum　energy　product.　New　metallurgical　processing　might　offer　the　possibility　of　overcoming　this　trade-off.　Here,　we　achieve　a　combination　of　an　intrinsic　coercivity　of　26.9　kOe,　a　remanence　of　11.2　kG,　and　a　maximum　energy　product　up　to　26.6　MGOe,　which　surpasses　most　of　conventional　Sm-Co　based　permanent　magnets,　by　manipulating　the　gradient　of　domain　wall　energy　landscape　of　constituent　phases　to　realize　the　attractive　domain　wall　pinning　in　Sm(Co,Fe,Cu,Zr)(z)　permanent　magnets.　Using　powerful　atomic-scale　analysis　technique　known　as　atom　probe　tomography　and　micromagnetic　simulations,　we　reveal　that　an　enlarged　attractive　domain　wall　pinning　strength　results　in　the　substantial　coercivity　enhancement　with　little　sacrifice　of　remanence　and　maximum　energy　product　in　the　Cu-particle-alloyed　magnet.　These　results　provide　atomic-level　insights　into　the　coercivity　mechanism　of　rare　earth　permanent　magnets,　with　the　methodology　offering　exciting　possibilities　for　quantitative　analyses　and　prediction　between　compositions　and　magnetic　properties　of　other　magnetic　materials.　(C)　2018　Acta　Materialia　Inc.　Published　by　Elsevier　Ltd.　All　rights　reserved.