Nicolet avatar 360 ft ir spectrometer

¹H NMR spectra of all products were recorded on a Varian
400 MHz spectrophotometer. Samples (5–10 mg) were dissolved
in DMSO-d₆, which was also used as the
internal reference. Fourier-transform infrared (FT-IR) absorbance
spectra were measured on a Thermo Nicolet/Avatar 360 FT-IR spectrometer.
Samples (1 wt %) were ground with KBr and pressed into a disc. Each
spectrum was an average of 32 scans. Elemental analyses were performed
by QTI (Whitehouse, NJ).

The X-ray diffraction patterns of powder samples were obtained by a PANalytical X’pert PRO MPD diffractometer using Cu-K_a radiation with a wavelength of 1.5406 Å. The Fourier-transform infrared (FT-IR) spectra were collected in transmission mode with a Thermo Nicolet AVATAR 360 FT-IR spectrometer in the spectral range of 400–4000 cm⁻¹ at room temperature. FT-IR powder samples were dried at 50 °C before the fabrication of the KBr pellet. X-ray photoelectron (XPS) spectroscopy was carried out with a monochromatic Al K_a X-ray source using chamber pressures of about 10^–8 Pa. Conventional transmission electron microscopy (TEM) observations were done using a Philips CM300 microscope to determine the average particle size and morphology of the powder on an accelerating voltage of 200 kV. The surface morphology of the sample was observed by the Tescan MIRA3 scanning electron (SEM) microscope. In addition, an MDK-VSM system was used for magnetic characterizations. The optical properties were evaluated using the Cary Eclipse photoluminescence (PL) spectrometer.