Abstract
The results of indentation-induced microhardness testing studies of flux-grown single crystals of rare earth orthoferrites, RFeO3 (R=Gd to Er and Yb), rare earth orthochromites RCrO3 (R=La, Eu and Dy), and rare earth aluminates RAlO3 (R=La, Sm, Gd, Eu and Ho) are presented. The variation in the value of microhardness with load is observed to be non-linear in the case of all these materials. It is found that the results are not in accordance with Kick's law. The results have been analysed and the applicability of the idea of materials resistance pressure in the modified law as proposed by Hays and Kendall [Metallography 6 (1973) 275] is discussed.
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Kotru, P.N., Raina, K.K., Kachroo, S.K. et al. Microhardness measurements on single crystals of flux-grown rare earth perovskites (orthoferrites, orthochromites and aluminates). J Mater Sci 19, 2582–2592 (1984). https://doi.org/10.1007/BF00550813
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DOI: https://doi.org/10.1007/BF00550813