Abstract
Ho3+ owns the biggest magnetic moment, stark splitting of energy and low-symmetry D2 crystal field which make Ho3+ high polarizable and has been studied as dopant in several magnetic crystals. For the first time, Ho3+ doped sol-gel synthesized diamagnetic glass for nonlinear, magnetic and magneto optical study was reported. This paper reports the synthesis, structure, morphology and magnetization of hexagonal NaYF4:Fe, Ho nanorods and importantly, the influence of NaYF4:Fe, Ho to the thermal, nonlinear, magnetic and Faraday rotation of diamagnetic glasses through varies techniques such as X-ray diffraction, scanning electron microscopy, Raman spectra, Ultraviolet–visible spectra, different scanning calorimetry, thermal mechanical analysis, Z-scan, superconducting quantum interference device magnetometry and Verdet constant measurement. Experimental results discovered that the doping of Ho3+ and Fe3+ ions disturbed the self-assembly of NaYF4 while suppressed the length of nanorod. Due to its nanoscale, magnetization of NaYF4:Fe, Ho changed from diamagnetic to superparamagnetic. The doping of NaYF4:Fe, Ho increased the thermal stability and third nonlinearity. Glass with different amount of doping presented diamagnetism and paramagnetism due to the strongest magnetic moment, increased polarizability, electron transition of Ho3+ and d-d exchange of Fe3+ ions in glass matrix. Glass doped 2% of NaYF4:Fe, Ho glass showed the best magnetic, magneto optical performance and improved thermal stability and nonlinearity which can be ideal candidate for photonics, nonlinear and magneto optical applications.
Published Version
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