Synthesis and magnetic properties of nanocrystals of cubic defect spinel MgMnO3

Seehra, M. S.; Singh, V.; Thota, S.; Prasad, B.; Kumar, J.
September 2010
Applied Physics Letters;9/13/2010, Vol. 97 Issue 11, p112507
Academic Journal
Synthesis and magnetic properties of nanocrystals (size ≃22 nm) of cubic spinel MgMnO3 with the defect structure [Mg2+][Mg1/32+Mn4/34+□1/3]O4 are reported. Analysis of the magnetization M versus T (2–370 K) and M versus H (up to 65 kOe) data shows a blocking temperature TB≃11 K and an estimated Néel temperature TN∼150 K above which the Weiss temperature θ=-7 K and μ=3.91 μB/Mn4+. For TB


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