# Search results of SQL query from the Crystallography Open Database
# Date and time performed: 2026-05-02T01:47:31+02:00
# Query:
# SELECT data.*
# FROM
#  data JOIN jaltnames
#  ON altname = journal
# WHERE
#  (status is null or status != 'retracted') and
#  (journal_id IN (SELECT DISTINCT(journal_id) FROM jaltnames WHERE altname LIKE 'Ceramics International') AND volume = 21 AND duplicateof IS NULL AND (status is NULL OR status != 'errors') AND (method is NULL OR method != 'theoretical'))
# ORDER BY file asc
file,a,siga,b,sigb,c,sigc,alpha,sigalpha,beta,sigbeta,gamma,siggamma,vol,sigvol,celltemp,sigcelltemp,diffrtemp,sigdiffrtemp,cellpressure,sigcellpressure,diffrpressure,sigdiffrpressure,thermalhist,pressurehist,compoundsource,nel,sg,sgHall,sgNumber,commonname,chemname,mineral,formula,calcformula,cellformula,Z,Zprime,acce_code,authors,title,journal,year,volume,issue,firstpage,lastpage,doi,method,radiation,wavelength,radType,radSymbol,Rall,Robs,Rref,wRall,wRobs,wRref,RFsqd,RI,gofall,gofobs,gofgt,gofref,duplicateof,optimal,status,flags,svnrevision,date,time,onhold
"9013139","7.765","","7.765","","5.6275","","90","","90","","120","","293.852","","","","","","","","","","","","Synthetic","2","P 3 1 c","P 3 -2c","159","","","Nierite","- N4 Si3 -","- N4 Si3 -","- N16 Si12 -","4","0.666667","","Yang, P.; Fun, H.-K.; Rahman, I. A.; Saleh, M. I.","Two phase refinements of the structures of a-Si3N4 and B-Si3N4 made from rice husk by Rietveld analysis Locality: synthetic Sample: Alpha phase Note: changed N4 location to match reported bond distances","Ceramics International","1995","21","","137","142","10.1016/0272-8842(95)95885-L","","","","","","","","","","","","","","","","","","","","","has coordinates","291877","2024-05-16","06:53:48",""
"9013140","7.6093","","7.6093","","2.9079","","90","","90","","120","","145.814","","","","","","","","","","","","","2","P 63/m","-P 6c","176","","","","- N4 Si3 -","- N4 Si3 -","- N8 Si6 -","2","0.166667","","Yang, P.; Fun, H.-K.; Rahman, I. A.; Saleh, M. I.","Two phase refinements of the structures of a-Si3N4 and B-Si3N4 made from rice husk by Rietveld analysis Sample: Beta phase","Ceramics International","1995","21","","137","142","10.1016/0272-8842(95)95885-L","","","","","","","","","","","","","","","","","","","","","has coordinates","291877","2024-05-16","06:53:48",""