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- W2079076571 abstract "We present a study of the magnetic properties of La1−xCexCrO3 performed by DC magnetization and electron spin resonance (ESR) techniques. The susceptibility χ(T) for x=0 shows an anomaly at TS=535 (5) K, which we associate to a structural rombohedral–orthorhombic transition. Above and below TS, χ(T) follows a Curie–Weiss (CW) law and we determine C=1.99(1) emu/mol K, and Θ =−800 (7) K. The existence of competing interactions was manifested in the relatively low value of TN=288 (3) K [Θ⧸TN≈3] and by the development of a weak FM component below TN. For x≠0, the observed changes in χ(T) may be explained by considering that Ce is trivalent. These observations contrast with the series Ca1−xCexMnO3 (Cr3+ and Mn4+ are isoelectronic) where Ce was present as Ce4+. Dramatic effects on the ESR spectrum of La1−xCexMnO3 were observed as a function of x and the x=0.20 spectrum is not more visible. Relaxation mechanisms compatible with S>12 resonant ions should be proposed in order to describe the ESR behavior." @default.
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- W2079076571 date "2007-03-01" @default.
- W2079076571 modified "2023-09-25" @default.
- W2079076571 title "Magnetic properties of La1−xCexCrO3" @default.
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- W2079076571 doi "https://doi.org/10.1016/j.jmmm.2006.10.1005" @default.
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