Menu
Cart

2015/09/17 on Nature: Room temperature switchable polarization and magnetization in a perovskite oxide

Posted by MSE Supplies on

Nature 525, 363–366 doi:10.1038/nature14881

With delicate crystal engineering of a perovskite oxide, traditionally impossible switching of polarization and magnetization at room temperature is now a reality.  This kind of room temperature tuneable materials will open doors for the development of many new functional devices and products.  

Crystal structure, magnetic percolation and the morphotropic phase boundary (MPB) in (1 - x)BiTi(1 - y)/2FeyMg(1 - y)/2O3-(x)CaTiO3 where 0 [le] x [le] 0.35 and 0.25 [le] y [le] 0.90.

The search for room temperature magnetoelectric multiferroic materials, combining ferroelectricity and and ferromagnetism, is driven by a strong desire to fabricate novel functional devices. Ferroelectricity is the long-range order of atomic-scale electric dipoles that can be switched by an electric field, and ferromagnetism is long-range order of magnetic dipoles that can be switched by a magnetic field. Combining the two is problematical because of the opposing requirements for realizing these two properties. Mathew Rosseinsky and colleagues now show that ferroelectricity and ferromagnetism can be combined in a bulk perovskite oxide at room temperature by constructing a percolating network of interacting magnetic ions within a structural scaffold exhibiting polar lattice symmetries at a morphotropic phase boundary. This method should allow the generation of a range of tuneable multiferroic materials for possible practical applications.

Source: Nature

http://www.nature.com/nature/journal/v525/n7569/full/nature14881.html#affil-auth

Related Posts

Is Graphene Hydrophilic or Hydrophobic?
Is Graphene Hydrophilic or Hydrophobic?
Graphene is a form of carbon that is made up of carbon atoms which form a single layer of aromatic rings (see Figure ...
Read More
2021 Best Materials Engineering Graduate Programs Ranking by U.S.News (2016 - 2021)
2021 Best Materials Engineering Graduate Programs Ranking by U.S.News (2016 - 2021)
US News & World Report published its 2021 ranking of the best graduate schools and programs in the U.S. (ranked i...
Read More
Solid‐State Lithium–Sulfur Battery Enabled by Ampcera Solid State Electrolyte Material
Solid‐State Lithium–Sulfur Battery Enabled by Ampcera Solid State Electrolyte Material
German scientists from the University of Münster developed a high performance solid‐state lithium–sulfur battery, and...
Read More

Share this post



← Older Post Newer Post →