Abstract
The magnetic properties of half-doped Pr(Sr1−xCax)2Mn2O7 (x = 0.4 and 0.9) single crystals have been investigated under magnetic field (H) and hydrostatic pressure (P). Analysis of magnetization data reveals that, for x = 0.4 sample, only one charge-orbital ordering (CO-OO) transition occurs which decreases very slowly with P, while the antiferromagnetic ordering transition shifts towards higher temperature with the increase of P. For x = 0.9 sample, with the increase of P, the low-temperature CO-OO transition temperature decreases and the high-temperature CO-OO transition remains unaffected while antiferromagnetic and structural transition temperatures increase.
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