Room temperature magnetic ordering and analysis by bound magnetic polaron model of Yb3+ doped nanocrystalline zinc oxide (Zn0.98Yb0.02O)

Improved Room-Temperature Ferromagnetism in Nd-Doped SnO2 Nanostructures through Defect Engineering

“…In addition, strong s–f coupling between the host SnO 2 (s) and Nd ions (f) states contribute to FM ordering in the doped samples. Many other factors may also be responsible for FM ordering, such as the morphology, shape, and distribution of particles . FM ordering was found to be more prominent than PM ordering in the doped samples.…”

“…Many other factors may also be responsible for FM ordering, such as the morphology, shape, and distribution of particles. 13 FM ordering was found to be more prominent than PM ordering in the doped samples. However, the PM phase susceptibility increases with doping, suggesting the coexistence of magnetic phases, as seen from the fitting of the M−H loops.…”

“…Dilute magnetic semiconductors (DMSs) have received a great deal of attention recently because of the opportunity to employ the charge and spin features of electrons in the field of spintronics. − DMS systems possess both semiconducting and magnetic properties, enabling them to be the suitable materials for technological applications. , The essential prerequisite for the practical application of DMS is to exhibit room-temperature ferromagnetism (RTFM), which can be easily observed in oxide nanomaterials. , The origin of induced magnetism in these systems is still a controversial subject. Some investigations have suggested that the incorporation of suitable dopants in the undoped semiconducting structure plays a crucial role in making them ferromagnetic, , whereas a few other studies have reported that mediated defects such as oxygen vacancies (V o ) are accountable for the occurrence of this phenomenon. − Oxide semiconducting nanomaterials such as SnO 2 , ZrO 2 , TiO 2 , ZnO, and CeO 2 have attracted much interest from the research community because of their various potential applications. − Among them, SnO 2 nanomaterials have been used in gas sensing, transparent conducting electrodes, spintronics, optoelectronics devices, flat-panel displays, and Li-ion batteries because of their unique features, such as high optical transparency, rich oxygen vacancies, good electrical conductivity, and better thermal and chemical stabilities compared with other nanomaterials. − SnO 2 (n-type semiconductor) has a large energy gap ( E g = 3.6 eV). Its space group is P 4 2 / mnm , and it has a tetragonal rutile crystal lattice.…”

Synthesis of tetragonal SnO2 photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue

“…The observed peaks are located at ∼ 26.6°, 33.9°, 38°, 51.8°, 54.8°, 57.8°, 61.9°, 64.8°, 66°, 71.3°, 78.80°correspond to the Bragg reflection planes (110), ( 101), ( 200), ( 211), ( 220), ( 002 ChemistrySelect reliability in the calculated crystal geometry parameters. [30,31] The microstructural parameters such as lattice constants (a, b, c) volume(V), and density(1) etc. are listed in Table 3 along with the R-factors.…”

Micro‐structural Analysis and Photocatalytic Properties of Green Synthesized t‐ZrO2 Nanoparticles

“…The reliability and accuracy of the calculated parameters of the crystal geometry mainly depend on the 'goodness-of-fit (GoF)' χ 2 , and various R-factors, such as R p (profile factor), R exp (expected weighted profile factor), R wp (weighted profile factor), R F (crystallographic factor) and R B (Bragg factor). [17,18] Rietveld analysis of XRD data also helps in finding microstructural parameters such as lattice constants (a, b, c), volume (V), and density (1) etc. The R-factors and the parameters of microstructure are depicted in Table 1.…”