Rare earth doped maghemite EDL-MF: a perspective for nanoradiotherapy?

Solubility limit, magnetic interaction and conduction mechanism in rare earth doped spinel ferrite

“…RE compounds with RE 3+ are appropriate for doping purpose. RE 3+ ions prefer Bsite inside spinel structure [17][18][19]. RE doped ferrites deals with the following issues.…”

“…Thus, research is being carried out for doped ferrite systems in order to understand the altered behavior and to optimize them for different applications [11][12][13][14][15]. In recent years, rare earth (RE) doped ferrites become interesting due to their superiority for various applications over other doped ferrite systems [17][18][19][20][21][22]. These systems become radioactive and exhibit potentential for biomedical applications [19] along-with efficient tumor passive targeting [23].…”

“…In recent years, rare earth (RE) doped ferrites become interesting due to their superiority for various applications over other doped ferrite systems [17][18][19][20][21][22]. These systems become radioactive and exhibit potentential for biomedical applications [19] along-with efficient tumor passive targeting [23]. Improved capability of dye removal [24], waste water treatment [25], degradation of organic pollutants through photocatalytic activity [26] are other important fields of utilization of these ferrites.…”

“…These ferrites exhibit enhanced magneto optical kerr (MOKE) effect [20] and excellent microwave absorption properties [21,22]. Thus, these ferrites cover a wide range of applications chiefly based on their magnetic characteristics [17][18][19][20][21][22][23][24][25]. However, there is lack of understanding of magnetic interaction, conduction mechanism inside these ferrites [15,16].…”

Zero-field and in-field Mössbauer spectroscopy as a tool for structural and magnetic characterization of maghemite (γ-Fe2O3) nanoparticles

“…As we know today there are four different crystalline polymorphs of iron(III) oxide [1,2]: a-Fe203, naturally occurring as hematite, showing a rhombohedrally centered hexagonal structure of a corundum type (space group R3c); /3-Fe203 having a body-centered cubic "bixbyite" structure (space group Ia3); 7-Fe203, known as maghemite, with a cubic spinel structure; and r exhibiting an orthorhombic structure (space group Pna21). Maghemite, a red-brown magnetic material that is structurally similar with magnetite and has the same chemical composition as hematite, is the most important and prosperous phase out of the above mentioned polymorphs because it is widely used in a plenty of applications such as magnetic pigments in recording and information-storage media [3,4], in catalysis [5], *) Presented at International Colloquium "M6ssbauer Spectroscopy in Materials Science", V~emina, Czech Republic, June 1-4, 2004. magnetic fluids [6], anticorrosion protective paints [7], gas sensors [8], magnetooptical devices [9] and in studies of macroscopic quantum tunneling effect [10]. It is also worthwhile to mention that maghemite has been found effective as an imageintensifying agent for nuclear magnetic resonance imaging [11], in bioprocessing [12], magnetic separations [13], magneto-caloric refrigeration [14], medical diagnosis [15], controlled drug delivery [16] and magnetic-induced cancer therapy [17].…”