Negative magnetization in La0.75Nd0.25CrO3 perovskite
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Complex oxides of transition metals (TM) with the perovskite structure have attracted great interest due to a whole series of unique properties such as high-temperature superconductivity, colossal magnetoresistance, coexisting (anti)ferromagnetism, and (anti)ferroelectricity. Recently, several groups have reported negative magnetization observed below a certain temperature on cooling of a sample in a low or a medium (up to 4 kOe) magnetic field. This phenomenon was discovered for LaVO3 , YVO3 , La1−xGdxMnO3 , Nd1−xCaxMnO3 , GdCrO3 , La1−xPrxCrO3 , and some others perovskites. In the present paper, we report on the reversal of the magnetization for LaCrO3–NdCrO3 solids.
The end compounds, LaCrO3 and NdCrO3, have an orthorhombic perovskite structure at room temperature (space group Pbnm (Pnma)) . The exchange coupling between the magnetic moments of the Cr3+ ions in LaCrO3is predominantly antiferromagnetic. G-type of antiferromagnetic structure is...
KeywordsLaCrO3 Paramagnetic Effect Negative Magnetization Spontaneous Magnetic Moment Weak Ferromagnetic Moment
- 15.Khomchenko VA, Troyanchuk IO, Tovar M, Szymczak R, Szymczak H (unpublished)Google Scholar