000076012 001__ 76012 000076012 005__ 20200117213747.0 000076012 0247_ $$2doi$$a10.1186/s40494-018-0229-7 000076012 0248_ $$2sideral$$a108923 000076012 037__ $$aART-2018-108923 000076012 041__ $$aeng 000076012 100__ $$aNicolopoulos, S. 000076012 245__ $$aNovel characterization techniques for cultural heritage using a TEM orientation imaging in combination with 3D precession diffraction tomography: a case study of green and white ancient Roman glass tesserae 000076012 260__ $$c2018 000076012 5060_ $$aAccess copy available to the general public$$fUnrestricted 000076012 5203_ $$aWe present new transmission electron microscopy (TEM) based electron diffraction characterization techniques (orientation imaging combined with 3D precession electron diffraction tomography-ADT) applied on cultural heritage materials. We have determined precisely unit cell parameters, crystal symmetry, atomic structure, and orientation/phase mapping of various pigment/opacifier crystallites at nm scale which are present in green and white Roman glass tesserae. Such TEM techniques can be an alternative to Synchrotron based techniques, and allow to distinguish accurately at nm scale between different crystal structures even in cases of same/very close chemical composition, where is also possible to visualize between different crystal orientations and amorphous/crystalline phases. This study additionally demonstrates that although opacifiers in green and white tesserae are found to have average Pb2Sb2O7 cubic and CaSb2O6 trigonal structures, their pyrochlore related framework can host many other elements like Cu, Ca, Fe through ionic exchanges at high firing temperatures which in turn may also contribute to the tesserae colour appearance. 000076012 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000076012 590__ $$a2.165$$b2018 000076012 591__ $$aSPECTROSCOPY$$b18 / 41 = 0.439$$c2018$$dQ2$$eT2 000076012 591__ $$aCHEMISTRY, ANALYTICAL$$b44 / 84 = 0.524$$c2018$$dQ3$$eT2 000076012 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b154 / 293 = 0.526$$c2018$$dQ3$$eT2 000076012 592__ $$a0.671$$b2018 000076012 593__ $$aArcheology$$c2018$$dQ1 000076012 593__ $$aConservation$$c2018$$dQ1 000076012 593__ $$aArcheology (arts and humanities)$$c2018$$dQ1 000076012 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000076012 700__ $$aDas, P.P. 000076012 700__ $$aBereciartua, P.J. 000076012 700__ $$aKaravasili, F. 000076012 700__ $$aZacharias, N. 000076012 700__ $$aPerez, A.G. 000076012 700__ $$aGalanis, A.S. 000076012 700__ $$aRauch, E.F. 000076012 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, R.$$uUniversidad de Zaragoza 000076012 700__ $$aPortillo, J. 000076012 700__ $$aRoque-Rosell, J. 000076012 700__ $$aKollia, M. 000076012 700__ $$aMargiolaki, I. 000076012 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada 000076012 773__ $$g6 (2018), 64 [12 pp]$$pHerit. sci.$$tHeritage Science$$x2050-7445 000076012 8564_ $$s1245237$$uhttps://zaguan.unizar.es/record/76012/files/texto_completo.pdf$$yVersión publicada 000076012 8564_ $$s99262$$uhttps://zaguan.unizar.es/record/76012/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000076012 909CO $$ooai:zaguan.unizar.es:76012$$particulos$$pdriver 000076012 951__ $$a2020-01-17-21:30:15 000076012 980__ $$aARTICLE