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Plain_Jane鐵蟲 (初入文壇)
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[求助]
Fullprof請看過來,Rp=30降不下去,麻煩看下還有哪些地方可繼續(xù)改進,使之小于5
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按照zero->scale factor->背底->晶胞參數(shù)->半寬參數(shù)->原子坐標及站位的順序修,但是Rp依舊很大,麻煩看下還有哪些參數(shù)可繼續(xù)精修,我們要求的是至少Rwp小于5,謝謝各位。 COMM data_LanthanumCalciumChromiumOxide ! Current global Chi2 (Bragg contrib.) = 2.904 ! Files => DAT-file: 73.dat, PCR-file: 73 !Job Npr Nph Nba Nex Nsc Nor Dum Iwg Ilo Ias Res Ste Nre Cry Uni Cor Opt Aut 0 5 1 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ! !Ipr Ppl Ioc Mat Pcr Ls1 Ls2 Ls3 NLI Prf Ins Rpa Sym Hkl Fou Sho Ana 0 0 1 0 1 0 4 0 0 3 0 0 0 0 0 0 0 ! ! Lambda1 Lambda2 Ratio Bkpos Wdt Cthm muR AsyLim Rpolarz 2nd-muR -> Patt# 1 1.540560 1.544390 0.50000 40.000 8.0000 0.9100 0.0000 80.00 0.0000 0.0000 ! !NCY Eps R_at R_an R_pr R_gl Thmin Step Thmax PSD Sent0 1 0.10 1.00 1.00 1.00 1.00 10.0080 0.017000 134.9750 0.000 0.000 ! !2Theta/TOF/E(Kev) Background for Pattern# 1 9.8809 2894.8154 31.00 10.2778 2838.8159 41.00 10.8730 2718.2129 51.00 11.6667 2614.1384 61.00 12.8571 2505.2466 71.00 14.4444 2413.5945 81.00 16.4286 2385.0950 91.00 21.7857 2437.7998 101.00 19.0079 2523.6792 111.00 23.7698 2338.3518 121.00 26.7460 2170.9421 131.00 30.1190 2125.0266 141.00 34.2857 2128.9451 151.00 37.4603 1962.6729 161.00 41.8254 1915.0844 171.00 44.2063 1869.6841 181.00 49.3651 1878.2397 191.00 52.7381 1778.8585 201.00 55.9127 1828.0142 211.00 61.2698 1801.4630 221.00 64.6429 1749.2683 231.00 67.4206 1772.0658 241.00 70.7936 1733.1124 251.00 72.9762 1695.1471 261.00 75.3572 1734.5105 271.00 80.5159 1736.0968 281.00 82.5000 1718.8481 291.00 84.6825 1715.3329 301.00 89.2460 1720.4454 311.00 91.0318 1704.6936 321.00 92.8175 1707.8364 331.00 95.3968 1742.8245 341.00 98.5714 1735.3479 351.00 100.9524 1708.3512 361.00 103.9286 1716.9708 371.00 107.8968 1721.6801 381.00 110.8730 1712.3868 391.00 113.2540 1739.7053 401.00 118.2143 1756.4147 411.00 120.1984 1730.4609 421.00 122.9762 1760.0404 431.00 128.7302 1790.6395 441.00 130.7143 1760.4255 451.00 133.4921 1791.9880 461.00 ! ! 51 !Number of refined parameters ! ! Zero Code SyCos Code SySin Code Lambda Code MORE ->Patt# 1 -0.01685 11.0 0.00000 0.0 0.00000 0.0 0.000000 0.00 0 !------------------------------------------------------------------------------- ! Data for PHASE number: 1 ==> Current R_Bragg for Pattern# 1: 5.89 !------------------------------------------------------------------------------- data_LanthanumCalciumChromiumOxide ! !Nat Dis Ang Pr1 Pr2 Pr3 Jbt Irf Isy Str Furth ATZ Nvk Npr More 6 0 0 0.0 0.0 1.0 0 0 0 0 0 1139.457 0 5 0 ! P n m a <--Space group symbol !Atom Typ X Y Z Biso Occ In Fin N_t Spc /Codes La1 La 0.00212 0.25000 0.98800 1.50946 0.14258 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Ca1 Ca 0.00212 0.25000 0.98800 1.50946 0.35803 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Fe1 Fe 0.00000 0.00000 0.50000 1.05060 0.35000 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Cr1 Cr 0.00000 0.00000 0.50000 1.05060 0.15000 0 0 0 0 0.00 0.00 0.00 0.00 0.00 O1 O 0.44768 0.25000 0.04541 1.21764 0.50000 0 0 0 0 0.00 0.00 0.00 0.00 0.00 O2 O 0.21631 0.53510 0.21968 3.33196 1.00000 0 0 0 0 0.00 0.00 0.00 0.00 0.00 !-------> Profile Parameters for Pattern # 1 ! Scale Shape1 Bov Str1 Str2 Str3 Strain-Model 0.17302E-02 0.00001 0.00000 0.00000 0.00000 0.00000 0 21.00000 0.000 0.000 0.000 0.000 0.000 ! U V W X Y GauSiz LorSiz Size-Model 0.003549 -0.011452 0.011194 0.018509 0.000000 0.000000 0.000000 0 0.000 501.000 0.000 511.000 0.000 0.000 0.000 ! a b c alpha beta gamma #Cell Info 5.458908 7.716220 5.457939 90.000000 90.000000 90.000000 471.00000 481.00000 491.00000 0.00000 0.00000 0.00000 ! Pref1 Pref2 Asy1 Asy2 Asy3 Asy4 0.00000 0.00000 0.09698 0.06879 0.00000 0.00000 0.00 0.00 0.00 0.00 0.00 0.00 ! 2Th1/TOF1 2Th2/TOF2 Pattern # 1 10.008 134.975 1 結果是Conventional Rietveld Rp,Rwp,Re and Chi2: 33.3 15.3 10.6 2.061[ Last edited by linhua0402313 on 2016-3-25 at 20:58 ] |
鐵蟲 (初入文壇)
新蟲 (初入文壇)
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