caa a22 4500 445382252 CHVBK 20180317143021.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-1001-8 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1001-8 Effect of Microwave Processing on Polycrystalline Hard Barium Hexaferrite [Elektronische Daten] [Geetanjali,, Charu Dube, Subhash Kashyap, R. Kotnala] The present paper describes our results on the phase transformation (from crystalline to amorphous) of M-type hard barium hexaferrite, and consequently its conversion into soft ferrite by the application of magnetic energy at microwave frequency (2.45 GHz). The rapid volumetric heating of the conventionally prepared polycrystalline hexaferrite by microwave energy at a temperature of 950 °C in a short duration of only 5min resulted in a decrystallized phase. The magnetic studies (M-H loops) of the resistively heated and MW processed samples have revealed a lowering in coercivity (from 188 to 2 mT) in the latter samples, thereby establishing the formation of soft ferrite. An attempt has also been made to understand the observed transformation from hard to soft ferrite. Springer Science+Business Media, LLC, 2010 Microwave processing nationallicence Barium hexaferrite nationallicence Decrystallization nationallicence Microstructure nationallicence Magnetic properties nationallicence Geetanjali, Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut Dube Charu Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut Kashyap Subhash Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut Kotnala R. National Physical Laboratory, K.S. Krishnan Marg, 110012, New Delhi, India aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 567-570 1557-1939 24:1-2<567 2011 24 10948 https://doi.org/10.1007/s10948-010-1001-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1001-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Geetanjali Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut NATIONALLICENCE 700 1- Dube Charu Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut NATIONALLICENCE 700 1- Kashyap Subhash Department of Physics, Indian Institute of Technology Delhi, 110016, New Delhi, India aut NATIONALLICENCE 700 1- Kotnala R. National Physical Laboratory, K.S. Krishnan Marg, 110012, New Delhi, India aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 567-570 1557-1939 24:1-2<567 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer