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Pressure-induced exchange bias effect in phase-separated CaMn0.9Ru0.1O3
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Image of FIG. 1.
FIG. 1.

(a) Hysteresis loops of the FC magnetization of CaMn0.9Ru0.1O3 measured after cooling in H cool = 15 kOe at 10 K under several pressures. Inset shows changes in the slope of high-field magnetization, an indicative of strengthening of AFM phase with pressure. (b) Thermoremanent magnetization curves at various pressures recorded at H = 0 after FC at 15 kOe. (c) Symmetric ZFC (closed symbols) and asymmetric FC (open symbols) hysteresis loops at two different pressures.

Image of FIG. 2.
FIG. 2.

(a) Pressure dependence of the saturated magnetization M S of CaMn0.9Ru0.1O3 at 10 K. (b) Pressure dependence of the coercive field H C at 10 K. Solid lines are calculated for both different states: for multi-domain FM clusters (below 5 kbar) and for single-domain FM clusters (above 5 kbar). (c) Pressure dependence of the EB field H E at 10 K. Inset shows a linear fit of H E vs. 1/M S. (d) Pressure dependence of the normalized remanence asymmetry M E/M S at 10 K. Inset shows a linear correlation between M E/M S and H E.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pressure-induced exchange bias effect in phase-separated CaMn0.9Ru0.1O3