References
- Blinc , R. , Laguta , V. V. , Zalar , B. , Itoh , M. and Krakauer , H. 2008 . 17O quadrupole coupling and the origin of ferroelectricity in isotopically enriched BaTiO3 and SrTiO3 . J. Phys.: Condens. Matter , 20 : 085204 [6 pages]
- Koch , K. , Kuzian , R. O. , Koepernik , K. , Kondakova , I. V. and Rosner , H. 2009 . Analysis of the electric field gradient in the perovskites SrTiO3 and BaTiO3: Density functional and model calculations . Phys. Rev. B , 80 : 125113 [9 pages]
- Cohen , R. E. and Krakauer , H. 1990 . Lattice dynamics and origin of ferroelectricity in BaTiO3: Linearized-augmented-plane-wave total-energy calculations . Phys. Rev. B , 42 : 6416 – 6423 .
- Kondakova , I. V. , Kuzian , R. O. , Raymond , L. , Hayn , R. and Laguta , V. V. 2009 . Evidence for impurity-induced polar state in Sr1−xMnxTiO3 from density functional calculations . Phys. Rev. B , 79 : 134117 [7 pages]
- Koepernik , K. and Eschrig , H. 1999 . Full-potential nonorthogonal local-orbital minimum-basis band-structure scheme . Phys. Rev. B , 59 : 1743 – 1757 .
- Blaha , P. , Schwarz , K. and Dederichs , P. H. 1988 . First-principles calculation of the electric-field gradient in hcp metals . Phys. Rev. B , 37 : 2792 – 2796 .
- Harrison , W. A. 2004 . Elementary Electronic Structure , Singapore : World Scientific .
- Mattheiss , L. F. 1970 . Crystal-field effects in the tight-binding approximation: ReO3 and perovskite structures . Phys. Rev. B , 2 : 3918 – 3935 .
- Khomskii , D. I. 2006 . Multiferroics: Different ways to combine magnetism and ferroelectricity . JMMM , 306 : 1 – 8 .