2016/08/31 by Mickaël Morin, Emmanuel Canévet, Adrien Raynaud +12 · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Ferroelectricity #Ferromagnetism #Magnet #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetism #Materials science #Multiferroics and related materials #Nanotechnology #Optoelectronics #Physics #Spintronics #Spiral (railway) #cond-mat.str-el
paper · pdf · doi:10.1038/ncomms13758
published as Nature Communications, Volume 7, id. 13758 (2016) · 4 Figures
openalex publication_date 2016/12/16 · arxiv created 2017/01/13 · arxiv updated 2017/01/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Abstract In the past years, magnetism-driven ferroelectricity and gigantic magnetoelectric effects have been reported for a number of frustrated magnets featuring ordered spiral magnetic phases. Such materials are of high-current interest due to their potential for spintronics and low-power magnetoelectric devices. However, their low-magnetic ordering temperatures (typically <100 K) greatly restrict their fields of application. Here we demonstrate that the onset temperature of the spiral phase in the perovskite YBaCuFeO 5 can be increased by more than 150 K through a controlled manipulation of the Fe/Cu chemical disorder. Moreover, we show that this novel mechanism can stabilize the magnetic spiral state of YBaCuFeO 5 above the symbolic value of 25 °C at zero magnetic field. Our findings demonstrate that the properties of magnetic spirals, including its wavelength and stability range, can be engineered through the control of chemical disorder, offering a great potential for the design of materials with magnetoelectric properties beyond room temperature.