title: Magnetocrystalline two-fold symmetry in CaFe2O4single crystal.
abstract: Understanding of magnetocrystalline anisotropy in CaFe2O4is a matter of importance for its future applications. A high quality single crystal CaFe2O4sample is studied by using synchrotron x-ray diffraction, a magnetometer and the electron spin resonance (ESR) technique. A broad feature of the susceptibility curve around room temperature is observed, indicating the development of 1D spin interactions above the on-set of antiferromagnetic transition. The angular dependency of ESR reveals an in-plane two-fold symmetry, suggesting a strong correlation between the room temperature spin structure and magnetocrystalline anisotropy. This finding opens an opportunity for the device utilizing the anisotropy field of CaFe2O4.
authors.affiliation: Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan.
authors.forename: Ashish Chhaganlal
authors.initials: AC
authors.lastname: Gandhi
authors.forename: Rajasree
authors.initials: R
authors.lastname: Das
authors.forename: Fang-Cheng
authors.initials: FC
authors.lastname: Chou
authors.forename: Jauyn Grace
authors.initials: JG
authors.lastname: Lin