{"success":true,"data":{"mp_id":"mp-8415","type":"ELA","summary":{"formula":"K2HfF6","mp_id":"mp-8415","nelements":3,"is_stable":false,"nsites":9,"density":4.77595,"volume":128.87972,"a":6.52045,"b":6.52045,"c":3.50025,"alpha":90,"beta":90,"gamma":120,"space_group":"P-62m","space_group_num":189,"crystal_system":"Hexagonal","formation_energy_per_atom":-3.66632,"energy_per_atom":-6.30048,"energy_above_hull":0.06044,"point_group":"-6m2","Bravais_Lattice":"hP","Bravais_Combination":"hP","packing_fraction":0.7405,"uncorrected_energy_per_atom":-5.99248,"volume_per_atom":14.31997,"c_over_a":0.53681,"b_over_a":1,"poisson_ratio":0.28828,"Is_FCC":0,"Is_BCC":0,"Is_HCP":1},"elasticity":{"k_vrh":51.219,"g_vrh":25.252,"E_Calc(GPa)":65.063,"homogeneous_poisson":0.288,"Vickers_Hard_Est(GPa)":2.781,"universal_anisotropy":0.701,"Lame_Lambda(GPa)":34.38433333333333,"Pugh_Ratio(K\/G)":2.02831458894345,"Ductility":"Brittle","bulk_modulus":51.219,"shear_modulus":25.252,"debye_temperature":401,"sound_velocity":2564.6,"homogeneity":0.288},"electronic":{"is_metal":false,"band_gap":6.8396,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":1.0e-5,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-8415","mp_task_ids":["aaabnhdo","aaaclsqg","aaadcydm","aaaenghp","aaaeynbz","aaafdjjv"]},"xrd":{"by_target":{"CuKa":{"radiation":"Cu Kα","wavelength":1.5418,"n_peaks":31,"three_strong":[15.6932,27.3557,50.0553]}}}}}