{"success":true,"data":{"mp_id":"mp-21312","type":"HEA","summary":{"mp_id":"mp-21312","formula":"Ca(Ni2B)6","nelements":3,"nsites":19,"density":7.11763,"volume":188.80114,"energy_above_hull":0,"formation_energy_per_atom":-0.35392,"energy_per_atom":-6.21937,"is_stable":true,"uncorrected_energy_per_atom":-10.61218,"last_updated":"2025-09-23 22:46:48.316000+00:00","deprecated":false,"possible_species":["Ca2+","Ni1.33+","B3-"],"crystal_system":"Trigonal","space_group":"R-3m","space_group_num":166,"point_group":"-3m","a":5.97684,"b":5.97684,"c":5.97684,"alpha":104.4554,"beta":104.4554,"gamma":104.4554,"volume_cell":188.80114,"volume_per_atom":9.9369,"c_over_a":1,"b_over_a":1,"Bravais_Lattice":"hR","Lattice_Type_Detail":"Rhombohedral","Lattice_Centering":"Rhombohedral","Bravais_Combination":"hR","Is_FCC":false,"Is_BCC":false,"Is_HCP":false,"Is_Bravais_aP":false,"Is_Bravais_mP":false,"Is_Bravais_mC":false,"Is_Bravais_oP":false,"Is_Bravais_oC":false,"Is_Bravais_oI":false,"Is_Bravais_oF":false,"Is_Bravais_tP":false,"Is_Bravais_tI":false,"Is_Bravais_hP":false,"Is_Bravais_hR":true,"Is_Bravais_cP":false,"Is_Bravais_cI":false,"Is_Bravais_cF":false,"packing_fraction":null},"elasticity":{"available":false},"electronic":{"is_metal":true,"band_gap":0,"is_gap_direct":false,"cbm":null,"vbm":null},"magnetic":{"total_magnetization":0,"total_mag_norm_vol":0,"num_magnetic_sites":0,"ordering":"NM","is_magnetic":false},"refs":{"dois":[],"bibtex_entries":[],"origin_tasks":["mp-2746645","mp-2746645","mp-2746645"],"raw_refs":[],"mp_task_ids":["mp-1835777","mp-2746645","mp-1604497","mp-2012006","mp-21312","mp-1673500","mp-1413975","mp-2176607","mp-2745856","mp-2611981"],"mp_url":"https:\/\/next-gen.materialsproject.org\/materials\/mp-21312"}}}