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Updated: Jul 4, 2025
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Systematic rare Earth doping to adopt an R32 type huntite structure in NdSc3(BO3)4 crystals
Artem B Kuznetsov1, Konstantin A Kokh1, Ekaterina V Kaneva2
1Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia. kokh@igm.nsc.ru.
Abstract:
This study is focused on determining the type and quantity of REE impurities responsible for converting the structure of NdSc3(BO3)4 into an R32 polymorph. According to the single crystal X-ray diffraction of RNdSc(BO3)4 (R = Sm-Lu, x + y + z = 4) the samples probably contain several polymorphic modifications. However, the predominant structure has been defined as R32 for R = Eu, Er, Tm, and Yb and P3221 for R = Sm, Gd, Tb, Dy, and Ho. Another potential limitation to the future use of the crystals is a compositional zoning found in the crystals with significant substitution in the scandium position.
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