Determination of the Existence Region of a Griffith-Like Phase in Pr1–xSr x MnO3/YSZ Films

Strain-induced charge ordering above room temperature in rare-earth manganites

“…These T G values are close to the T C value of the single-crystal structures. 20 No dependence of the T C and T G values on the film thickness was found. It was expected that the films above T G would be in a paramagnetic state.…”

“…A similar behavior is observed for the effective g -factor ( g eff ) since it is related to H res by the ratio g eff = hν / μ B H res . 20 However, the anomalous magnetic behavior of the samples above their T G is more obvious based on the temperature dependence of the Δ H value. As can be seen in Fig.…”

“…The magnetic behavior of the PSMO films studied earlier showed that their T C values were significantly lower than for the same single crystals (115 vs. 150 K for the x = 0.2 and 215 vs. 305 K for x = 0.4). 20 Besides, the Griffiths-like phase was revealed in the films above T C . Such a phase represents the short-range ferromagnetic correlations.…”

“…19 Our previously studies have shown that polycrystalline Pr 1− x Sr x MnO 3 /YSZ films ( x = 0.2 and 0.4) without a pronounced texture exhibit magnetic inhomogeneity over a wide temperature range. 20 This behaviour indicates multiple phase separations in the films forming different magnetic and electronic states. In has been suggested that the internal strain between the lattices of the constituent crystallites causes phase separation in these films, thereby reducing the ferromagnetic order temperature and expanding the boundaries of short-range ferromagnetic correlations in the paramagnetic phase.…”

Exotic magnetic properties in Zintl phase BaVSe3: a theoretically supported experimental investigation

“…In most of the substituted manganites there is magnetic inhomogeneity at temperatures above T C , and Griffith initially explained it for disordered magnetic systems. [48][49][50] It is defined for randomly diluted Ising ferromagnets and this phase appears as ferromagnetic clusters in a paramagnetic matrix above T C . 24 This theory was first introduced for explaining the CMR, magnetic susceptibility, and heat capacity in La 0.7 Ca 0.3 MnO 3 .…”