01459nas a2200157   4500008004100000022001400041245012400055210006900179260012500248300001100373490000800384520073600392100002801128700002501156856012001181       2012                        eng d  a0003-695100aHigh magnetostriction and coupling coefficient for sintered cobalt ferrite derived from superparamagnetic nanoparticles0 aHigh magnetostriction and coupling coefficient for sintered coba  aCIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScAUG  a0724050 v1013 a<p>High magnetostriction (lambda) and coupling coefficient (d lambda/dH) of 315 ppm and 1.97 x 10(-9) A(-1) m, respectively, are obtained at room temperature for sintered cobalt ferrite derived from nanocrystalline powders. Also, the powder was compacted at a low pressure of 8 MPa and sintered for a short duration of 10 min at 1450 degrees C. Magnetic annealing at 300 degrees C in a field of 0.5 T for 30 min further enhanced the magnetostriction coefficient to 345 ppm with a higher coupling coefficient 2.12 x 10(-9) A(-1)m. The magnetic field above which maximum magnetostriction is observed is reduced by almost half after magnetic annealing. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745922]</p>1 aMohaideen, Kamal, Khaja1 aJoy, Pattayil, Alias  uhttps://library.ncl.res.in/content/high-magnetostriction-and-coupling-coefficient-sintered-cobalt-ferrite-derived-0