%0 Journal Article %K Optical properties %K Manganese compounds %K Manganese %K Energy gap %K Band gaps %K Endmembers %K Linear combinations %K Mixed-metals %K Polar oxides %K Tunabilities %K Tunable Band-gap %A X.S Xu %A J.F Ihlefeld %A J.H Lee %A O.K Ezekoye %A E Vlahos %A Ramamoorthy Ramesh %A V Gopalan %A X.Q Pan %A D.G Schlom %A J.L Musfeldt %B Applied Physics Letters %D 2010 %G eng %R 10.1063/1.3427499 %T Tunable band gap in Bi (Fe1-x Mnx) O3 films %V 96 %X In order to investigate band gap tunability in polar oxides, we measured the optical properties of a series of Bi (Fe1-x Mnx) O3 thin films. The absorption response of the mixed metal solid solutions is approximately a linear combination of the characteristics of the two end members, a result that demonstrates straightforward band gap tunability in this system. © 2010 American Institute of Physics.