Mössbauer and Raman characterization of ash produced by burning ancient buried Japanese cedar and investigation for its unusual color tone
2020 ◽
Vol 326
(1)
◽
pp. 753-764
Keyword(s):
Abstract Mössbauer and Raman spectroscopic characterization of colored ash samples made by combustion of ancient buried Japanese cedar (Cryptomeria japonica) was carried out, and the factors governing the color tones were investigated mainly in terms of the chemical species of Fe. The ash samples displayed various unusual colors, depending clearly on the individual ancient tree and the part of it. Some of Mössbauer spectra of the ash samples showed magnetic hyperfine splittings due to internal magnetic fields. The Mössbauer and Raman spectra suggested that the primary Fe-containing species in all the ash samples was calcium ferrite, Ca2Fe2O5.
1984 ◽
Vol 789
(1)
◽
pp. 80-86
◽
1993 ◽
Vol 24
(7)
◽
pp. 423-430
◽
2001 ◽
Vol 563-564
◽
pp. 283-287
◽
2008 ◽
Vol 12
(7-8)
◽
pp. 919-923
◽
2012 ◽
Vol 6
(7)
◽
pp. 601-608
◽