2008/06/04 by R. P. Chaudhury, Rajit P. Chaudhury, Clarina dela Cruz +7
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Frustration #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics #Multiferroics and related materials #Phase transition #Physical chemistry #Physics #Polarization (electrochemistry) #Quantum mechanics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.220104
published as Phys. Rev. B 77, 220104(R) (2008)
arxiv created 2008/06/04 · openalex publication_date 2008/06/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The low-temperature ferroelectric polarization of multiferroic YMn2O5 is completely reversed at a critical pressure of 10 kbar and the phase transition from the incommensurate to the commensurate magnetic phase is induced by pressures above 14 kbar. The high-pressure data correlate with thermal-expansion measurements, indicating a significant lattice strain at the low-temperature transition into the incommensurate phase. The results support the exchange striction model for the ferroelectricity in multiferroic RMn2O5 compounds and they show the importance of magnetic frustration as well as the spin-lattice coupling.