{"product_id":"exchange-bias-in-core-shell-ferrite-nanoparticles-von-k-maaz","title":"Exchange Bias in Core\/shell Ferrite Nanoparticles","description":"\u003cp\u003eMagnetic nanoparticles of cobalt ferrite have been  synthesized by co-precipitation method. XRD and TEM  analyses have been performed for structural  characterization while for magnetic characterization  VSM and PPMS have been used. A detailed study of the  magnetic hysteresis loop was performed to elucidate  the effects of particle sizes. Temperature dependence  of coercivity in these nanoparticles followed a  simple model of thermal activation of the particle  moments over the anisotropy barriers while the  saturation magnetization followed the modified Bloch.  The results of size dependent saturation  magnetization, coercivity and exchange bias have been  explained in the light of the surface spin disorder  in ferrite nanoparticles. Magnetic characterization  of Ni-CoFe2O4 has been performed and explained with  reference to the variation in doping concentration,  surface spin disorder and the role of bulk and  surface anisotropy. Blocking effects have been  studied both in CoFe2O4 and NiFe2O4 systems and it  was found that the blocking temperature increases  with increasing particle size while it decreases with  increasing nickel concentration in CoFe2O4  nanoparticles.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838354903\"\u003e\u003ch3\u003eSynthesis and magnetic characterization of nickel substituted cobalt ferrite nanoparticles\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838354903","offer_id":39499100356701,"sku":"9783838354903","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/1acf23de-d03e-4ed7-854f-51c8667637b2.jpg?v=1757914006","url":"https:\/\/shop.autorenwelt.de\/en\/products\/exchange-bias-in-core-shell-ferrite-nanoparticles-von-k-maaz","provider":"Autorenwelt Shop","version":"1.0","type":"link"}