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FeC2O4 precursor has sharp and high diffraction peaks, which are well indexed to iron oxalate dihydrate JCPDS card 72-1305.
As a result of the decomposition of iron oxalate, iron oxide has an X-ray diffraction pattern attributed to Fe2O3 JCPDS card no 39-1346.
LFP/C obtained from FePO4, Fe3(PO4)2, and FeC2O4 precursors have XRD peaks that are in accordance with the standard JCPDS card reference (JCPDS 81-1173), which demonstrate a successful formation of olivine type orthorhombic structure with no impurities can be observed.
Meanwhile, LFP/C produced from Fe2O3 XRD peaks does not match the JCPDS card.
Acknowledgement This research was funded by LPDP through the RISPRO Invitation Scheme (Contract number: PRJ-6/LPDP/2020) References [1] A.

According to the XRD spectrum (Fig. 1), the unit–cell parameter of prepared KNiF3 is a=4.0152±0.0025, which is close to that of the corresponding KNiF3 synthesized by solid-state reaction (a=4.0127)[JCPDS Card 21-1002].
Compared to the [JCPDS Card 21-1002] data, the prepared KNiF3 has cubic perovskite-type structure.
When the suspensions are irradiated with sunlight, the number of photoproduced electrons of catalyst increase relatively and there is a corresponding increase in the photoreduction of carbonates.

Fig.2 (a) indicates the powder annealed at 250℃ was main cubic WO3 which was identified with JCPDS card number 41-0905.
The WO3 powder annealed at 350℃ for 4h presented an obvious monoclinic structure with JCPDS card number 71-2141 and no other phase appeared in the pattern.

The optical absorption was measured in the wave number range 510 cm-1 to 4000 cm-1.
The identification of the peaks in diffraction intensity was made using a JCPDS data card [20].
The observed and the JCPDS file d-values are found to be in fair agreement.
The number of edges of rectilinear growth features observed on the top free surface seems to depend on the location of centre of nucleation of the dendritic growth pattern.
JCPDS (File) Pub.

The XRD patterns were phase identified using the JCPDS data bank [10] and the anatase and rutile structural models were taken from ICSD data bank [11].
The main peaks observed on X-ray diffraction patterns of the PZT powder samples calcined from 380 to 550 ºC for 2 hours were identify by comparing with similar lead and zirconium titanate phases available on JCPDS data bank [10].
It was found two main phase matching in relative intensity and peak positions, the P4mm tetragonal perovskite phase (card number 33-784) and the Fd-3m cubic pyrochlore one (card number 26-142).
The raw data of X-ray diffraction were refined by Rietveld method by using these structural models found on ICSD data bank [9], according the card numbers 90699 and 26316 for P4mm tetragonal perovskite and Fd-3m cubic pyrochlore structures, respectively.
[10] JCPDS - Joint Committee on Powder Diffraction Standards/International Center for Diffraction Data, Pennsylvania, Powder Diffraction File, 2003

After that, the quantitative evaluation (staining collected cells with 7-Amino-Actinomycin D and quantifying the number of cells by a flow cytometry method) of cell cultures was made.
In the XRD spectrum the two peaks that are at both sides of the most intense peak correspond to the (111) and the (111) peaks of the monoclinic ZrO2 (JCPDS card No. 241165) and the most intense peak corresponds to the (101) reflexion of the tetragonal ZrO2 or (111) reflexion of the cubic ZrO2 (JCPDS card No. 140534).

Eu 2+ (4f 7) ion shows a 5d-4f emission varying from ultraviolet to red, depending on the host lattice, site size difference, site symmetry and coordination number of the activating ion [6, 7, 8].
The main phase registered was tetragonal Sr3SiO5 with space group of P4/ncc (JCPDS card 26-0984).
Orthorhombic Sr2SiO4 (JCPDS card 39-1256) is the second phase in the samples.

This result indicates that these strong crystalloid peaks are corresponding to the cordierite (JCPDS card no.13-0294) and mullite (JCPDS card no.5-776) phases.
As the sample heated at 1250℃, the microstructure seemed to become denser, and a large number of crystals are precipitated and distributed evenly, with the shape including columnar, massive and lamellar, ect..

Typical XRD for the three samples The X-ray diffraction studies revealed synthesized materials possessed the characteristic peaks of γ-MnO2 which indexed from the XRD JCPDS card no.72-1983.
From fig. 1, it can be seen that the peak intensities increased when the reaction temperature rose from 70 °C to 75 °C and thus the XRD pattern matched better with the JCPDS card, which implied the 75°C 2 h-MnO2 sample had higher crystallinity degree and less impurities than 70 °C 10 h-MnO2 sample.
In reaction, the formation of a large number of nuclei in a very short time through a well-known "Ostwald ripening process"[1] and then crystals grow comparatively slowly.

Only SmCo3 (JCPDS standard card numbered 25-1071) can be found without barium introduction (x=0).
The XRD pattern for x=0.5 sample is evidence of a single-phase, high crystalline double-perovskite SmBaCo2O5.54 structure without any impurity phase (JCPDS file card, No. 53-133).