Synthesis, magnetic and dielectric properties of Er–Ni doped Sr-hexaferrite nanomaterials for applications in High density recording media and microwave devices

Substitution of La and Fe with Dy and Mn in multiferroic La1−xDyxFe1−yMnyO3 nanocrystallites

“…This high increase might be due to decreased contents of Fe 3 þ and Fe 2 þ . This high increase in electrical resistivity of LaFeO 3 multiferroic based nanocrystallites recommended the use of these materials in electronic devices which work at very high frequencies [28].…”

“…In the above equation e 00 is the dielectric loss [28]. Effect of Dy-Mn contents on dielectric parameters (e 0 , tand and e 00 are shown in Figs.…”

Site preference and magnetic properties of Zn-Sn-substituted strontium hexaferrite

“…Hexagonal strontium hexaferrite SrFe 12 O 19 (SFO), along with other M -type hexaferrites XFe 12 O 19 (X = Sr, Ba, Pb), has large saturation magnetization, high coercivity, and excellent chemical stability [1][2][3]. Several experimental studies of substituted hexaferrite have been performed where magnetic properties are tailored to fit specific applications by the partial substitution of Fe in its crystallographic sites by divalent, trivalent, tetravalent, and divalent-tetravalent combination of metal atoms.…”

Conducting, magnetic polyaniline/Ba0.25Sr0.75 Fe11(Ni0.5Mn0.5)O19 nanocomposite: Fabrication, characterization and application

“…M-type hexaferrites are extensively used for the development of microwave absorbers in higher GHz range due to the high saturation magnetization, large anisotropy field, excellent chemical stability and good microwave absorption properties [19,20]. Meanwhile, in recent years many studies have been extensively developed for modifying the dielectric and magnetic properties of various M-type ferrites by substitution of different ions in which Fe 3+ cation was replaced by several tetravalent (Ti +4 , Sn +4 , Zr +4 , Ir +4 , and Ru +4 ) and divalent (Co +2 , Mn +2 , Zn +2 , and Ni +2 ) cations [21][22][23]. Also, Sr-Ba based hexaferrites are studied by many researchers owing to their outstanding properties.…”