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- W1609393359 abstract "Ferromagnetic and transport properties of ${mathrm{La}}_{0.8}{mathrm{Ca}}_{0.2}{mathrm{MnO}}_{3}$ and ${mathrm{La}}_{0.78}{mathrm{Ca}}_{0.22}{mathrm{MnO}}_{3}$ single crystals were studied in temperature range $4.2mathrm{K}<T<300mathrm{K}$ and under hydrostatic pressure up to 12 kbar. It was found that the above compounds exhibit different shifts of Curie temperatures ${T}_{C}$ under pressure. For ${mathrm{La}}_{0.8}{mathrm{Ca}}_{0.2}{mathrm{MnO}}_{3}$ ${mathrm{dT}}_{C}/dPensuremath{approx}0.3mathrm{K}/mathrm{k}mathrm{b}mathrm{a}mathrm{r},$ whereas for ${mathrm{La}}_{0.78}{mathrm{Ca}}_{0.22}{mathrm{MnO}}_{3}$ a stronger nonlinear increase ${T}_{C}(P)$ was observed. A significant change of the easy axis magnetization with temperature was found for ${mathrm{La}}_{0.8}{mathrm{Ca}}_{0.2}{mathrm{MnO}}_{3},$ in the (110) plane. The above effect is almost entirely suppressed by an external pressure of 6 kbar. The ac susceptibility of ${mathrm{La}}_{0.8}{mathrm{Ca}}_{0.2}{mathrm{MnO}}_{3}$ shows a sharp frequency dependent increase at $T=80mathrm{K},$ upon heating indicating a transition to cluster spin-glass formation. The results observed are discussed regarding a coexistence of ferromagnetic metallic and ferromagnetic insulating phases." @default.
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- W1609393359 date "2002-09-10" @default.
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- W1609393359 title "Magnetization and ac susceptibility studies of the magnetic phase separation in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.8</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ca</mml:mi></mml:mrow><mml:mrow><mml:mn>0.2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal…" @default.
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