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SnO2-fullprof精修問(wèn)題
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最近在用fullprof精修納米粉末樣品SnO2的結(jié)構(gòu),修到現(xiàn)在修不下去了,請(qǐng)高手幫忙看看哪里出問(wèn)題了?附件為pcr 和dat文件 SnO2.PNG |
» 搶金幣啦!回帖就可以得到:
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鐵桿木蟲 (職業(yè)作家)
鐵桿木蟲 (職業(yè)作家)
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附件是我?guī)湍阈薷牡膒cr文件,特別是參數(shù)代碼部分。 http://pan.baidu.com/share/link? ... p;amp;uk=1980594835 有一個(gè)很大的問(wèn)題,就是你的數(shù)據(jù)收集的質(zhì)量不是很高。一方面,計(jì)數(shù)時(shí)間需要增加,另一方面,樣品制備需要注意。粉末樣品一定要磨得非常細(xì)、顆粒均勻。 通過(guò)對(duì)你的數(shù)據(jù)精修,還發(fā)現(xiàn)一個(gè)問(wèn)題,就是衍射峰半峰寬沒有統(tǒng)一規(guī)律,有幾個(gè)峰的半峰寬變窄,這是影響擬合偏差的主要因素,是不是樣品存在內(nèi)應(yīng)力? |
鐵桿木蟲 (職業(yè)作家)
鐵桿木蟲 (職業(yè)作家)
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不好意思,剛才弄錯(cuò)了 http://pan.baidu.com/share/link? ... p;amp;uk=1980594835 |
鐵桿木蟲 (知名作家)
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COMM High temperature structures of the rutile-type oxides, Ti O2 and Sn ! Current global Chi2 (Bragg contrib.) = 3.090 ! Files => DAT-file: SnO2.dat, PCR-file: SnO2 !Job Npr Nph Nba Nex Nsc Nor Dum Iwg Ilo Ias Res Ste Nre Cry Uni Cor Opt Aut 0 5 1 45 1 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 ->Patt# 1 1.540560 1.544390 0.50000 40.000 8.0000 0.9100 0.0000 40.00 0.0000 ! !NCY Eps R_at R_an R_pr R_gl Thmin Step Thmax PSD Sent0 30 0.10 1.00 1.00 1.00 1.00 10.0000 0.020000 89.9800 0.000 0.000 ! !2Theta/TOF/E(Kev) Background for Pattern# 1 11.0000 212.2929 31.00 12.5200 157.4488 41.00 13.6600 145.8440 51.00 15.7400 114.7341 61.00 17.3800 99.5959 71.00 19.1600 90.2452 81.00 21.6400 86.9394 91.00 24.1400 73.6839 101.00 25.2400 89.5297 111.00 27.7600 98.3874 121.00 30.0200 59.9395 131.00 30.6600 75.4862 141.00 35.3400 8.6878 151.00 36.1800 55.4691 161.00 40.3000 45.9599 171.00 40.7000 38.4832 181.00 41.8600 45.2354 191.00 43.7800 41.9517 201.00 45.0600 38.6341 211.00 45.6600 42.6810 221.00 49.4800 33.7233 231.00 53.1400 35.7890 241.00 55.6600 34.4130 251.00 56.8800 37.6763 261.00 57.0000 20.7471 271.00 59.2400 27.2611 281.00 59.5600 34.1376 291.00 60.8000 45.8052 301.00 63.3400 25.5004 311.00 67.1000 23.8800 321.00 68.2400 21.9556 331.00 69.9200 18.5707 341.00 72.0800 24.3630 351.00 73.3000 20.3996 361.00 74.0000 20.3330 371.00 76.2200 19.7874 381.00 77.3200 14.8556 391.00 79.7000 33.5807 401.00 79.9400 20.0138 411.00 82.1400 18.5907 421.00 82.5000 8.4306 431.00 84.7200 11.3278 441.00 85.4000 18.7479 451.00 86.2000 -6.8690 461.00 88.7200 112.3330 0.00 ! ! Excluded regions (LowT HighT) for Pattern# 1 88.00 95.00 ! ! 59 !Number of refined parameters ! ! Zero Code SyCos Code SySin Code Lambda Code MORE ->Patt# 1 -0.06438 21.0 0.00000 0.0 0.00000 0.0 0.000000 0.00 0 !------------------------------------------------------------------------------- ! Data for PHASE number: 1 ==> Current R_Bragg for Pattern# 1: 1.76 !------------------------------------------------------------------------------- High temperature structures of the rutile-type oxides, Ti O2 and Sn ! !Nat Dis Ang Pr1 Pr2 Pr3 Jbt Irf Isy Str Furth ATZ Nvk Npr More 2 0 0 0.0 0.0 1.0 0 0 0 0 0 301.378 0 5 0 ! P 42/m n m <--Space group symbol !Atom Typ X Y Z Biso Occ In Fin N_t Spc /Codes Sn1 Sn 0.00000 0.00000 0.00000 0.00000 0.11236 0 0 0 0 0.00 0.00 0.00 0.00 581.00 O1 O 0.30401 0.30401 0.00000 0.00000 0.25001 0 0 0 0 491.00 491.00 0.00 0.00 591.00 !-------> Profile Parameters for Pattern # 1 ! Scale Shape1 Bov Str1 Str2 Str3 Strain-Model 0.83242E-02 0.53553 0.00000 0.00000 0.00000 0.00000 0 11.00000 511.000 0.000 0.000 0.000 0.000 ! U V W X Y GauSiz LorSiz Size-Model 0.970384 -0.458121 0.322070 0.004816 0.000000 0.000000 0.000000 0 531.000 541.000 501.000 521.000 0.000 0.000 0.000 ! a b c alpha beta gamma #Cell Info 4.749165 4.749164 3.182706 90.000000 90.000000 90.000000 471.00000 471.00000 481.00000 0.00000 0.00000 0.00000 ! Pref1 Pref2 Asy1 Asy2 Asy3 Asy4 -0.03828 0.00000 0.00000 -0.00060 0.05974 0.00000 571.00 0.00 0.00 551.00 561.00 0.00 ! 2Th1/TOF1 2Th2/TOF2 Pattern # 1 10.000 88.000 1 |
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