Bulk　nanocrystalline　gadolinium　(Gd)　material　has　been　consolidated　from　Gd　nanoparticles　using　spark　plasma　sintering　(SPS).　High　density　(＞　99.5%)　bulk　nanocrystalline　material　was　achieved　after　sintering　at　a　temperature　of　280　A　degrees　C　with　a　pressure　of　500　MPa.　Microstructure　analysis　shows　that　the　consolidated　bulk　material　exhibits　a　single　phase　with　hexagonal　close　packed　structure　and　a　fine　grain　microstructure　with　a　mean　grain　size　of　about　15　nm.　The　structural　transformation　from　hexagonal　condensed　packed　to　face　centered　cubic　was　not　observed,　and　the　second-order　magnetic　transition　remained　in　the　nanocrystalline　Gd　sample.　The　Curie　temperature　of　the　nanocrystalline　Gd　decreased　by　more　than　10.7　K　below　that　of　the　coarse-grained.　The　activation　energies　for　the　coarse-grained　and　the　as-consolidated　Gd　materials　are　2.7702　and　1.0130　eV,　respectively.