2007/05/25 by Fei Yen, F. Yen, Clarina dela Cruz +8 · 98 citations
Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Dielectric #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Hexagonal lattice #Hexagonal phase #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetic moment #Magnetic structure #Magnetization #Materials science #Multiferroics #Multiferroics and related materials #Néel temperature #Phase (matter) #Phase boundary #Phase diagram #Physics #Spins #cond-mat.str-el
paper · pdf · doi:10.1557/jmr.2007.0271
published in Journal of materials research/Pratt's guide to venture capital sources 22(8), 2163-2173 (Springer Nature) · 23 pages, 16 figures, to be published in JMR's Aug. focus issue on multiferroics
arxiv created 2007/05/25 · openalex publication_date 2007/08/01 · openalex created_date 2016/06/24 · arxiv updated 2016/06/29 · openalex updated_date 2026/08/05
The magnetic phase diagrams of RMnO3 (R = Er, Yb, Tm, Ho) are investigated up to 14 Tesla via magnetic and dielectric measurements. The stability range of the AFM order below the Neel temperature of the studied RMnO3 extends to far higher magnetic fields than previously assumed. Magnetic irreversibility indicating the presence of a spontaneous magnetic moment is found near 50 K for R=Er, Yb, and Tm. At very low temperatures and low magnetic fields the phase boundary defined by the ordering of the rare earth moments is resolved. The sizable dielectric anomalies observed along all phase boundaries are evidence for strong spin-lattice coupling in the hexagonal RMnO3. In HoMnO3 the strong magnetoelastic distortions are investigated in more detail via magnetostriction experiments up to 14 Tesla. The results are discussed based on existing data on magnetic symmetries and the interactions between the Mn-spins, the rare earth moments, and the lattice.