C. J. Fennie

Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO3-type Phase of FeTiO3 (2009)

Varga, T., Kumar, A., Vlahos, E., Denev, S., Park, M., Hong, S., ...

We report the magnetic and electrical characteristics of a polycrystalline specimen of FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezoresponse force...

Strain-induced ferroelectricity in CaTiO$_3$ from first principles (2009)

Fennie, C. J., Rabe, K. M.

First principles calculations are used to investigate the effects of epitaxial strain on the structure of the perovskite oxide CaTiO$_3$, with particular focus on the stabilization of a ferroelectric...

Broadband Dielectric Spectroscopy of Ruddlesden-Popper Sr$_{n+1}$Ti$_{n}$O$_{3n+1}$ ($n$ = 1, 2, 3) Thin Films (2009)

Orloff, N. D., Tian, W., Fennie, C. J., Gu, D., Mateu, J., ...

We explore the frequency-dependent relative permittivity of Ruddlesden-Popper series Sr(n+1)Ti(n)O(3n+1) (n =1,2,3) thin films as a function of temperature and dc electric field. Interdigitated...

Combinatorial discovery of a lead-free morphotropic phase boundary in a thin-film piezoelectric perovskite (2008)

Fujino, S., Murakami, M., Varatharajan, A., Nagarajan, V., Fennie, C. J., ...

We report on the discovery of a lead-free morphotropic phase boundary in Sm doped BiFeO3 with a simple perovskite structure using the combinatorial thin film strategy. The boundary is a rhombohedral...

Broken parity and a chiral ground state in the frustrated magnet CdCr2O4 (2006)

Chern, Gia-Wei, Fennie, C. J., Tchernyshyov, O.

We present a model describing the lattice distortion and incommensurate magnetic order in the spinel CdCr2O4, a good realization of the Heisenberg "pyrochlore" antiferromagnet. The magnetic...