Abstract_Kee Hoon Kim
... frustrated spin system into either classical or quantum critical regime and thus investigating magnetic and/or electric critical phenomena. In this talk, two multiferroic materials BiMn2O5 and Ba2CoGe2O7 are discussed in this context. In the former, wherein a spontaneous ferroelectric polarization P ...
... frustrated spin system into either classical or quantum critical regime and thus investigating magnetic and/or electric critical phenomena. In this talk, two multiferroic materials BiMn2O5 and Ba2CoGe2O7 are discussed in this context. In the former, wherein a spontaneous ferroelectric polarization P ...
Chapter 18 Vocabulary Magnet – Any material that attracts iron or
... Chapter 18 Vocabulary Magnet – Any material that attracts iron or materials containing iron Poles – The parts of the magnets where the magnetic effects are strongest Magnetic Force – The force of repulsion or attraction between the poles of magnets Electromagnetism – The interaction between electric ...
... Chapter 18 Vocabulary Magnet – Any material that attracts iron or materials containing iron Poles – The parts of the magnets where the magnetic effects are strongest Magnetic Force – The force of repulsion or attraction between the poles of magnets Electromagnetism – The interaction between electric ...
Sun`s Magnetism - Mentor Public Schools
... The Magnetic Force Is most easily described by its effects—it is easy to see iron objects react or outline lines of magnetic attraction. ...
... The Magnetic Force Is most easily described by its effects—it is easy to see iron objects react or outline lines of magnetic attraction. ...
Multiferroics
Multiferroics have been formally defined as materials that exhibit more than one primary ferroic order parameter simultaneously (i.e. in a single phase), and many researchers in the field consider materials to be multiferroics only if they exhibit coupling between primary order parameters. However, the definition of multiferroics can be expanded to include non-primary order parameters, such as antiferromagnetism or ferrimagnetism.The four basic primary ferroic order parameters areferromagnetismferroelectricityferroelasticityferrotoroidicityThe last is a topic of some debate, as there was no evidence for switching ferrotoroidicity until recently.Many multiferroics are transition metal oxides with perovskite crystal structure, and include rare-earth manganites and -ferrites (e.g. TbMnO3, HoMn2O5, LuFe2O4 and recently, ""PZTFT"",). Other examples are the bismuth compounds BiFeO3 and BiMnO3, non-perovskite oxide LiCu2O2, and non-oxides such as BaNiF4 and spinel chalcogenides, e.g. ZnCr2Se4. These alloys show rich phase diagrams combining different ferroic orders in separate phases.Apart from single phase multiferroics, composites and heterostructures exhibiting more than one ferroic order parameter are studied extensively. Some examples include magnetic thin films on piezoelectric PMN-PT substrates and Metglass/PVDF/Metglass trilayer structures.Besides scientific interest in their physical properties, multiferroics have potential for applications as actuators, switches, magnetic field sensors or new types of electronic memory devices.