Abstract
Recent discoveries of the colossal magnetoelectric effect (CME) in TbMnO3 by Kimura and DyMn2O5 by Hur gave new stage on the study of multiferroics. They discovered that electrical polarization is flopped or flipped by magnetic field. Thus, we may control the ferroelectric state not only by electric field but also by magnetic field. Polarization flop by magnetic field and polarization flip by electrical field give four-state of the system, which can be used as memory device. In this paper, recent progress on the studies of magnetic and ferroelectric properties of RMn2O5 is reviewed. When we measure the dielectric and magnetic structure in the H-T phase diagram, we can easily say that the origin of the CME is the phase transition phenomena induced by magnetic field. The same phenomenon was also observed against hydrostatic pressure. We discuss the origin of the polarization of RMn2O5 in terms of magnetic ordering pattern. New results are also shown, in which ferrielectric character and polarization flop were found in RMn2O5.
| Original language | English |
|---|---|
| Title of host publication | Materials Science and Technology Conference and Exhibition, MS and T'08 |
| Pages | 189-197 |
| Number of pages | 9 |
| Volume | 1 |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | Materials Science and Technology Conference and Exhibition, MS and T'08 - Pittsburgh, PA, United States Duration: Oct 5 2008 → Oct 9 2008 |
Other
| Other | Materials Science and Technology Conference and Exhibition, MS and T'08 |
|---|---|
| Country | United States |
| City | Pittsburgh, PA |
| Period | 10/5/08 → 10/9/08 |
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Keywords
- Ferroelectrics
- Magnetic structure
- Multiferroic
- RMnO
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
Cite this
New aspects of magnetic and dielectric behavior of multiferroic RMn 2O5. / Noda, Y.; Kimura, H.; Fukunaga, M.; Kobayashi, S.; Kagomiya, I.; Kohn, K.
Materials Science and Technology Conference and Exhibition, MS and T'08. Vol. 1 2008. p. 189-197.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - New aspects of magnetic and dielectric behavior of multiferroic RMn 2O5
AU - Noda, Y.
AU - Kimura, H.
AU - Fukunaga, M.
AU - Kobayashi, S.
AU - Kagomiya, I.
AU - Kohn, K.
PY - 2008
Y1 - 2008
N2 - Recent discoveries of the colossal magnetoelectric effect (CME) in TbMnO3 by Kimura and DyMn2O5 by Hur gave new stage on the study of multiferroics. They discovered that electrical polarization is flopped or flipped by magnetic field. Thus, we may control the ferroelectric state not only by electric field but also by magnetic field. Polarization flop by magnetic field and polarization flip by electrical field give four-state of the system, which can be used as memory device. In this paper, recent progress on the studies of magnetic and ferroelectric properties of RMn2O5 is reviewed. When we measure the dielectric and magnetic structure in the H-T phase diagram, we can easily say that the origin of the CME is the phase transition phenomena induced by magnetic field. The same phenomenon was also observed against hydrostatic pressure. We discuss the origin of the polarization of RMn2O5 in terms of magnetic ordering pattern. New results are also shown, in which ferrielectric character and polarization flop were found in RMn2O5.
AB - Recent discoveries of the colossal magnetoelectric effect (CME) in TbMnO3 by Kimura and DyMn2O5 by Hur gave new stage on the study of multiferroics. They discovered that electrical polarization is flopped or flipped by magnetic field. Thus, we may control the ferroelectric state not only by electric field but also by magnetic field. Polarization flop by magnetic field and polarization flip by electrical field give four-state of the system, which can be used as memory device. In this paper, recent progress on the studies of magnetic and ferroelectric properties of RMn2O5 is reviewed. When we measure the dielectric and magnetic structure in the H-T phase diagram, we can easily say that the origin of the CME is the phase transition phenomena induced by magnetic field. The same phenomenon was also observed against hydrostatic pressure. We discuss the origin of the polarization of RMn2O5 in terms of magnetic ordering pattern. New results are also shown, in which ferrielectric character and polarization flop were found in RMn2O5.
KW - Ferroelectrics
KW - Magnetic structure
KW - Multiferroic
KW - RMnO
UR - http://www.scopus.com/inward/record.url?scp=63749089198&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63749089198&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:63749089198
SN - 9781605606217
VL - 1
SP - 189
EP - 197
BT - Materials Science and Technology Conference and Exhibition, MS and T'08
ER -