Results 11 to 20 of about 2,555 (212)

Room-Temperature Multiferroic Liquids: Ferroelectric and Ferromagnetic Order in a Hybrid Nanoparticle-Liquid Crystal System. [PDF]

Adv Mater
A hybrid fluid combining ferrimagnetic nanoplatelets and a ferroelectric nematic displays coexisting magnetization and polarisation at room temperature. This self‐assembled multiferroic shows strong magnetoelectric effect and nonlinear optical response, offering a soft, reconfigurable platform for next‐generation sensing, actuation, and photonic ...
Nádasi H, Medle Rupnik P, Küster M, Jarosik A, Tuffin R, Bremer M, Klasen-Memmer M, Lisjak D, Sebastián N, Mertelj A, Ludwig F, Eremin A.   +11 more
europepmc   +2 more sources

Magnetic and microwave absorption properties of barium hexaferrite doped with La3+ and Gd3+ [PDF]

Journal of Nanostructures, 2019
In this paper, BaLa‌xGdxFe12-2xO19 (x=0.2, 0.4, 0.6 and 0.8) were synthesized via sol-gel auto-combustion method. Fourier transform infrared spectroscopy (FTIR) of samples was represented that the bands at 400 and 500 cm-1 were related to the formation ...
Fatemeh Abdollahi, Mohammad Yousefi, Malak Hekmati, Ana Khajehnezhad, Seyyed Salman Seyyed Afghahi   +4 more
doaj   +1 more source

Enhanced Coercivity of Low-Density Barium Hexaferrite Magnets from Paste-Injection Molding

Magnetochemistry, 2022
Ceramic–polymer paste-injection molding is demonstrated as a facile fabrication route for barium hexaferrite magnets. Interestingly, these low-density (1.90–2.35 g/cm3) magnets exhibit substantial coercivity of 3868–4002 Oe.
Wannisa Thongsamrit, Pongsakorn Jantaratana, Thanida Charoensuk, Chitnarong Sirisathitkul   +3 more
doaj   +1 more source

Microscopic Mechanism of Ferroelectric Properties in Barium Hexaferrites

SSRN Electronic Journal, 2022
The microscopic mechanism of the occurrence of ferroelectric properties in M-type barium hexaferrites is investigated by experimental and first-principle computation methods. The analysis of magnetic, X-ray, and Mössbauer measurements of BaFe12O19 samples ascertains the correlation between the thermal factor in the process of annealing samples and ...
Turchenko, Vitalii, Bondyakov, A.S., Trukhanov, Sergei, Fina, Ignasi, Korovushkin, V.V., Balasoiu, Maria, Polosan, Silviu, Bozzo, Bernat, Lupu, Nicoleta, Trukhanov, Alex   +9 more
openaire   +1 more source

The effect of Mg–Al binary doped barium hexaferrite for enhanced microwave absorption performance

Case Studies in Thermal Engineering, 2020
In this work, binary dopant barium hexaferrite with nominal composition of BaFe12-2xMgxAlxO19 (x = 0 and 0.1 mol%) have been prepared by co-precipitation method and calcination temperature of 1100 °C.
Golfrid Gultom, Martha Rianna, Perdamean Sebayang, Masno Ginting   +3 more
doaj   +1 more source

Spontaneous Chiral Symmetry Breaking and Lane Formation in Ferromagnetic Ferrofluids

Small, Volume 19, Issue 52, December 27, 2023., 2023
Spontaneous chiral symmetry breaking is observed when exposing a ferromagnetic ferrofluid to an oscillating magnetic field. For specific field parameters, a periodic striped structure of elongated magnetic domains appears. Between individual domains, a flow of several µm s−1 is detected, with the fluid in adjacent lanes moving in alternating directions
Mojca Vilfan, Borut Lampret, Žiga Gregorin, Luka Cmok, Andrej Vilfan, Jürgen Klepp, Joachim Kohlbrecher, Patricija Hribar Boštjančič, Darja Lisjak, Alenka Mertelj   +9 more
wiley   +1 more source

Multivalued Memory via Freezing of Super‐Hard Magnetic Domains in a Quasi 2D‐Magnet

Small Methods, Volume 7, Issue 11, November 16, 2023., 2023
The 2D‐Ising ferromagnet BaFe2(PO4)2, is affected below 15 K by the freezing of its magnetic domains due to giant magneto‐crystalline anisotropy and intrinsic pinning of the narrow domain walls. It results in a transition from a soft to a super‐hard magnet with record‐coercive force greater than 14 T, and allows for the writing, robust locking and ...
Olivier Mentré, Bastien Leclercq, Angel M. Arevalo‐Lopez, Alain Pautrat, Sylvain Petit, Claire Minaud, Sylvie Daviero‐Minaud, Razmik A. Hovhannisyan, Vasily S. Stolyarov   +8 more
wiley   +1 more source

Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials

Advanced Materials Technologies, Volume 8, Issue 19, October 10, 2023., 2023
A novel, broadband material property extraction technique is used to evaluate frequency‐dependent electromagnetic properties of flexible materials. The concept is demonstrated by fabricating polydimethylsiloxane (PDMS) composites with barium hexaferrite nanoparticles.
Luckshitha Suriyasena Liyanage, Connor S. Smith, Jacob Pawlik, Sarah Evans, Angela Stelson, Christian Long, Nathan D. Orloff, David P. Arnold, James C. Booth   +8 more
wiley   +1 more source

Ferromagnetic Mn–Al–C L10 Formation by Electric Current Assisted Annealing

Advanced Engineering Materials, Volume 25, Issue 18, September 2023., 2023
The metastable Mn–Al–C τ‐phase shows potential to be used as permanent magnet; however, this phase is easily decomposed. To carefully control its synthesis, a novel approach using electric current–assisted annealing to obtain pure τ‐phase samples is reported. Increasing the electric current density, the onset temperature for phase formation is reduced,
Fernando Maccari, Alexander Zintler, Thomas Brede, Iliya A. Radulov, Konstantin P. Skokov, Leopoldo Molina-Luna, Oliver Gutfleisch   +6 more
wiley   +1 more source

Thin‐Film‐Shaped Flexible Actuators

Advanced Intelligent Systems, Volume 5, Issue 8, August 2023., 2023
Owing to the outstanding mechanical compliance and conformability to curvy surfaces, thin‐film‐shaped flexible actuators (TFFAs) have emerged as a promising branch of next‐generation actuators. This review summarizes the designs, manufacturing, mechanisms, and applications of representative TFFAs, aiming to provide an overview of the state‐of‐art ...
Wenbo Pang, Shiwei Xu, Liya Liu, Renheng Bo, Yihui Zhang   +4 more
wiley   +1 more source