{"success":true,"data":{"mp_id":"mp-6638","type":"HEA","summary":{"mp_id":"mp-6638","formula":"Nd2Fe2Si2C","nelements":4,"nsites":7,"density":6.60258,"volume":117.79073,"energy_above_hull":0,"formation_energy_per_atom":-0.58133,"energy_per_atom":-7.23246,"is_stable":true,"uncorrected_energy_per_atom":-7.25275,"last_updated":"2025-09-23 22:48:35.229000+00:00","deprecated":false,"possible_species":["Nd3+","Fe3+","C4-","Si4-"],"crystal_system":"Monoclinic","space_group":"C2\/m","space_group_num":12,"point_group":"2\/m","a":5.76479,"b":5.76479,"c":6.97109,"alpha":54.1825,"beta":54.1825,"gamma":40.5885,"volume_cell":117.79073,"volume_per_atom":16.82725,"c_over_a":1.20925,"b_over_a":1,"Bravais_Lattice":"mC","Lattice_Type_Detail":"Monoclinic (C-Centered)","Lattice_Centering":"C-Centered","Bravais_Combination":"mC","Is_FCC":false,"Is_BCC":false,"Is_HCP":false,"Is_Bravais_aP":false,"Is_Bravais_mP":false,"Is_Bravais_mC":true,"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":false,"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":0.00029,"total_mag_norm_vol":0,"num_magnetic_sites":0,"ordering":"NM","is_magnetic":false},"refs":{"dois":[],"bibtex_entries":[],"origin_tasks":["mp-1300791","mp-1300791","mp-1300791"],"raw_refs":[],"mp_task_ids":["mp-2263994","mp-1926225","mp-1672834","mp-1593131","mp-1300791","mp-2280131","mp-1170857","mp-2121313","mp-2317582","mp-6638","mp-1256075","mp-933015","mp-1261682","mp-1267906","mp-1078166","mp-943242","mp-2280025","mp-942225"],"mp_url":"https:\/\/next-gen.materialsproject.org\/materials\/mp-6638"}}}