CaBaCo${}_4$O${}_7$ : A ferrimagnetic pyroelectric

Abstract

Magneto-electric coupling in pyroelectric CaBaCo${}_4$O${}_7$ is investigated using ab-intio calculations and Landau theory. The former shows that exchange-striction is strong enough to produce a giant change in electric polarization upon ferrimagnetic ordering, comparable to the experimentally determined value of ~17 mC/m${}^2$ . Furthermore, Landau theory demonstrates that magneto-elastic coupling in CaBaCo${}_4$O${}_7$ is responsible for the strong magneto-electric coupling appearing close to the magnetic phase transition.

References in corpus (12)

• Giant improper ferroelectricity in the ferroaxial magnet CaMn7O12
• Quantum spin liquid states in the two dimensional kagome antiferromagnets, ZnxCu4-x(OD)6Cl2
• Spin-Orbit Coupling and Ion Displacements in Multiferroic TbMnO3
• First-principles study of improper ferroelectricity in TbMnO3
• Effect of magnetic disorder and strong electron correlations on the thermodynamics of CrN
• Multiferroic Properties of CaMn${}_7$O${}_{12}$
• Competing magnetic interactions in the extended Kagome system YBaCo4O7
• Magnetic-induced phonon anisotropy in ZnCr${}_2$O${}_4$ from first principles
• Magnetic Structure of CaBaCo4O7: Lifting of Geometrical Frustration towards Ferrimagnetism
• Gigantic magnetic field polarization and magnetoelectric coupling in a ferrimagnetic oxide CaBaCo4O7
• Ferroelectricity driven by the non-centrosymmetric magnetic ordering in multiferroic TbMn_2O_5: a first-principles study
• First-principles modeling of multferroic RMn${}_2$O${}_5$

Cited by in corpus (14)

• Unidirectional terahertz light absorption in the pyroelectric ferrimagnet CaBaCo4O7
• Spin-lattice and magnetoelectric couplings enhanced by orbital degrees of freedom in polar magnets
• Competing Exchange Interactions in the Multiferroic and Ferrimagnetic CaBaCo${}_4$O${}_7$
• Giant magnetostriction and nonsaturating electric polarization up to 60 T in the polar magnet CaBaCo4O7
• Enhancement of giant magnetoelectric effect in Ni-doped CaBaCo${}_4$O${}_7$
• Structural, magnetic and electronic properties of CaBaCo4-xMxO7 (M= Fe, Zn)
• Switching from pyroelectric to ferroelectric order in Ni doped CaBaCo4O7
• \textit{Ab initio} study on spin fluctuations of itinerant kagome magnet FeSn
• Terahertz frequency magnetoelectric effect in Ni doped CaBaCo${}_4$O${}_7$
• Remarkable effects of dopant valency $-$ a comparative study of CaBaCo${}_{3.96}$Cr${}_{0.04}$O${}_7$ and CaBaCo${}_{3.96}$Ni${}_{0.04}$O${}_7$
• Relieving Geometrical frustration through doping in the Dy${}_{1-x}$Ca${}_x$BaCo${}_4$O${}_7$ Swedenborgites
• Structural, magnetic and electric polarization properties of geometrically frustrated YBaCo4O7 and DyBaCo4O7 cobaltites
• Sliding multiferrocity in van der Waals layered CrI${}_2$
• Magnetoelectric Effect Dependent on Electric Field Direction in a Pyroelectric Ferrimagnet CaBaCo${}_4$O${}_7$