Journal
PHYSICAL REVIEW B
Volume 91, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.081107
Keywords
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Funding
- JSPS KAKENHI [24244058, 13J01596]
- Grants-in-Aid for Scientific Research [26000006, 13J01596] Funding Source: KAKEN
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The hydrostatic pressure effect on multiferroic properties of rare-earth manganites RMnO3 (R = Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressure, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (approximate to 10 degrees mu C/cm(2)) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO3, the B-induced change in P reached Delta P(B) = 1.3 mu C/ cm(2). A possible origin of the observed R-dependent pressure effect is discussed.
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