category of multiferroics
| Type-I FE, M order from different subsystem Tc>>TN | Type-II FE, M order from same subsystem, but independent origin Tc>TN | Type-III FE caused by M order TC<=TN | |
| SubType: | I.1 Lone pair FE | II.1 Valence order of magnetic ions | III.1 Spiral Magnets |
| Example: | BiFeO3 TC: 1100 TN: 640 K P: 100uC/cm^2 [Xu2009Ref] Intro: perovskite, A disp along (111) | LuFe2O4 TCO: 320 K TN: 240 K [Xu2008] P: 25 uC/cm2 | TbMnO3 TN=41K TC=28K P: 6e-2 [Kimura2007] Intro: inverse Dzyaloshinskii–Moriya effect. P~Qxe, where three symbols are ploarization, spiral propagation direction and normal vector of the spiral plan |
| Other Examples: | {BiMnO3, PbVO3} | Ni3V2O6, MnWO4, CuO orthorhombic RMnO3 (R=Tb,Dy) | |
| SubType: | I.2 Geometric FE | III.2 frustrated collinear M | |
| Example | YMnO3 TC: 1200 K TN: 42 K P: 5 μC/cm^2 [VanAken2004] Intro: perovskite, BO6 title, then A goes up and down asymmetrically | Ca3CoMnO6 TN, TC=16.5 K, P: 9e-2 uC/cm2 Intro: magnetostriction | |
| Other Examples: | hexagonal RMnO3 (R=Ho-Lu) | RMn2O5 (R=Pr-Lu, Bi,Y) |
[Kimura2007] Spiral magnets as magnetoelectrics
Author(s): Kimura T
Source: ANNUAL REVIEW OF MATERIALS RESEARCH Volume: 37 Pages: 387-413 Published: 2007
[VanAken2004] The origin of ferroelectricity in magnetoelectric YMnO3
Author(s): Van Aken BB, Palstra TTM, Filippetti A, et al.
Source: NATURE MATERIALS Volume: 3 Issue: 3 Pages: 164-170 Published: MAR 2004
[Xu2008] Charge Order, Dynamics, and Magnetostructural Transition in Multiferroic LuFe2O4
Author(s): Xu XS, Angst M, Brinzari TV, et al.
Source: PHYSICAL REVIEW LETTERS Volume: 101 Issue: 22 Article Number: 227602 Published: NOV 28 2008
[Xu2009] Optical properties and magnetochromism in multiferroic BiFeO3
Author(s): Xu XS, Brinzari TV, Lee S, et al.
Source: PHYSICAL REVIEW B Volume: 79 Issue: 13 Article Number: 134425 Published: APR 2009
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