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Anomalous pressure effect on the remanent lattice striction of a (La,Pr)1.2Sr1.8Mn2O7 bilayered manganite single crystal Matsukawa, M Tamura, A Nimori, S Suryanarayanan, R Kumagai, T Nakanishi, Y Apostu, M Revcolevschi, A Koyama, K Kobayashi, N ©2007 The American Physical Society We have studied the pressure effect on magnetostriction, both in the ab plane and along the c axis of a (La,Pr)1.2Sr1.8Mn2O7 bilayered manganite single crystal over the temperature region where the field-induced ferromagnetic metal (FMM) transition takes place. For comparison, we have also examined the pressure dependence of magnetization curves at the corresponding temperatures. The applied pressure reduces the critical field of the FMM transition and it enhances the remanent magnetostriction. An anomalous pressure effect on the remanent lattice relaxation is observed and is similar to the pressure effect on the remanent magnetization along the c axis. These findings are understood from the viewpoint that the double-exchange interaction-driven FMM state is strengthened by the application of pressure. The American Physical Society 2007-01-01 journal article VoR https://iwate-u.repo.nii.ac.jp/records/9809 10.1103/PhysRevB.75.014427 1098-0121 PHYSICAL REVIEW B 75 1 014427-1 014427-6 https://iwate-u.repo.nii.ac.jp/record/9809/files/prb-v75n1p014427.pdf application/pdf 220.6 kB 2016-11-14