Applications of the scanning electron microscope to solid-state devices

1965 ◽  
Vol 53 (4) ◽  
pp. 370-377 ◽  
Author(s):  
I.M. Mackintosh
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Solid State Devices ◽  
Scanning Electron

scholarly journals Fabrication and characterization of solid-state nanopores using a field emission scanning electron microscope

2006 ◽  
Vol 88 (10) ◽  
pp. 103109 ◽  
Author(s):  
Hung Chang ◽  
Samir M. Iqbal ◽  
Eric A. Stach ◽  
Alexander H. King ◽  
Nestor J. Zaluzec ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Fabrication And Characterization ◽  
Scanning Electron

Comparison of Lini0.5Mn1.5O4 and LiMn2O4 for Lithium-Ion Battery

2013 ◽  
Vol 860-863 ◽  
pp. 956-959
Author(s):  
Xing Hua Liang ◽  
Lin Shi ◽  
Yu Si Liu ◽  
Tian Jiao Liu ◽  
Chao Chao Ye ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Particle Size ◽  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Retention Rate ◽  
Lithium Ion ◽  
X Ray ◽  
Charge Discharge ◽  
Scanning Electron

The High Potential Material Lini0.5Mn1.5O4 was Synthesized via Solid-State Reaction.The Surface Morphology and Particle Size of the Sample were Observed by Scanning Electron Microscope(SEM).The Crystal Structure of the Sample was Collected and Analyzed through X-Ray Diffractometry(XRD).The Sample was Charaterized by Charge-Discharge Tests.Results Indicated that the Cycling Retention Rate was about 80%,after being Charge-Diacharged at a Rate of 0.1C in a Voltage of 3.45-4.77V for 10 Times.Compared with Limn2O4,LiNi0.5Mn1.5O4 has good cycle performance.Both of LiNi0.5Mn1.5O4 structure were space group of Fd3m.

scholarly journals PENENTUAN UKURAN BUTIR KRISTAL CuCr0,98Ni0,02O2 DENGAN MENGGUNAKAN X-RAY DIFRACTION (XRD) DAN SCANNING ELECTRON MICROSCOPE (SEM)

2020 ◽  
Vol 3 (1) ◽  
pp. 6
Author(s):  
Lalu A. Didik
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Solid State Reaction ◽  
X Ray ◽  
Scanning Electron

Telah dilakukan pengukuran ukuran butir Kristal CuCr0,98Ni0,02O2 dengan menggunakan persamaan Scherer dan analisa langsung menggunakan Scanning Electron Microscope (SEM). Kristal CuCr0,98Ni0,02O2 disintesis dengan menggunakan metode solid state reaction.  Untuk dapat mendapatkan data menggunakan persamaan Scherer, sampel harus terlebih dahulu dikarakterisasi menggunakan X-Ray Difraction (XRD). Hasil penghitungan menggunakan persamaan Scherer menunjukkan ukuran butiran Kristal sebesar (0,113 ± 0,015) µm dengan ralat relatif sebesar 13,2 %. Sedangkan pengukuran secara langsung menggunakan SEM menunjukkan ukuran butir Kristal sebesar (1,08 ± 0,23) µm dengan ralat relatif sebesar 21 %. Perbedaan hasil penghitungan dengan hasil pengukuran menggunakan SEM disebabkan karena morfologi lapisan. Morfologi kristal yang dihasilkan oleh scanning berkas elektron sekunder pada SEM memungkinkan untuk mendapatkan perbesaran gambar yang cukup sehingga dapat dilakukan pengukuran secara langsung. Sedangkan penghitungan ukuran butir Kristal CuCr0,98Ni0,02O2 menggunakan  persamaan Scherer berdasarkan prinsip difraksi sinar X dengan jarak antar celahnya adalah jarak antar atom pada Kristal sehingga untuk mendapatkan data ukuran butir Kristal menggunakan persamaan Scherer sampel harus terlebih dahulu dikarakterisasi menggunakan XRD. Selain itu, karena dilakukan secara langsung pengukuran hasil karakterisasi menggunakan SEM bukan mengukur ukuran butir Kristal melainkan ukuran partikel.   

Microstructures of Zirconium Titanate Powders and Ceramics Prepared by Solid-State Mixed Oxide Method

2008 ◽  
Vol 55-57 ◽  
pp. 145-148
Author(s):  
C. Puchmark ◽  
P. Tipparak
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Heating Rate ◽  
Sintering Temperature ◽  
Zirconium Titanate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Jcpds File ◽  
Scanning Electron

Zirconium titanate (ZrTiO4): ZT powders were prepared by solid-state mixed oxide method. The mixed powder was calcined at various temperatures for 3 h ranging from 1100 to 1400 oC with a heating rate of 5 oC/min. X-ray diffraction analysis of the powders was performed using a diffractometer with Cu Ka. Pyrochlore phase was observed for calcinations below 1300 oC. In general, the strongest reflections apparent in patterns could be matched with a JCPDS file number 74-1504. The optimum calcination temperature for the formation of ZrTiO4 phase was found to be about 1300 oC for 3 h with heating rate of 5 oC/min. The microstructures of calcined powders were examined using scanning electron microscope (SEM). The particle size of powder increased with increasing calcination temperature. The ZT ceramics sintered at 1450, 1500, 1550 and 1600 oC for 4 h with heating rate of 5 oC/min, were checked for phase formation by X-ray diffraction. The density of sintered samples was measured by Archimedes method. The microstructures of sintered samples were examined using scanning electron microscope (SEM). The average grain sizes were checked by linear interception method. It was found that, the samples sintered at 1450 and 1500 oC gave rise to high purity ZT ceramics and the peaks matched well with ZrTiO4 phase in a JCPDS file number 74-1504. Unknown phases were found in ZT ceramics sintered at 1550 and 1600 oC. The value of density was in the range of 4.32 - 4.92 g/cm3 or 84.26 - 96.12 % of the ZT theoretical density. The densification of ZT ceramics decreased with increasing sintering temperature. The ZT ceramics sintered at 1450 and 1500 oC showed the average grain size of 8.55 and 12.55 µm, respectively. At sintering temperature 1550 and 1600 oC, morphology of grains changed to plate like crystals of second phases.

Alumina-Zirconia-Silica Ceramics Synthesis by Selective Laser Sintering/Melting

2011 ◽  
Vol 121-126 ◽  
pp. 2487-2491
Author(s):  
Wei Wang ◽  
Yong Xian Liu ◽  
Jerry Y.H. Fuh ◽  
Peng Jia Wang
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Selective Laser Sintering ◽  
Dental Materials ◽  
Laser Sintering ◽  
Sintering Process ◽  
Optimal Parameters ◽  
X Ray ◽  
Scanning Electron

In this paper, the synthesis and investigation of the glass in the Al2O3- ZrO2-SiO2 system, to be used in dental field. The mechanism of powder–state becoming a solid state block during the laser sintering process was disclosed by scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analysis on powders and sintered samples. The optimal parameters of laser and can be obtained by the study. The results allowed us to affirm that the characteristics of this glass, in comparison with the tooth hard substances and other commonly employed inorganic dental materials, recommend it for further utilization in the dental field.

Effect of Excitation Wavelength on the Blue Emitting Sr2MgSi2O7 Phosphor

2015 ◽  
Vol 1087 ◽  
pp. 360-364 ◽  
Author(s):  
C.H. Chang ◽  
Swee Yong Pung ◽  
M.N. Ahmad Fauzi ◽  
Shah Rizal Kasim
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Scanning Electron Microscope ◽  
Blue Emission ◽  
Excitation Wavelength ◽  
X Ray ◽  
Reducing Atmosphere ◽  
Long Afterglow ◽  
Crystal Phases ◽  
Scanning Electron

Long afterglow blue emission silicate (SMS) phosphor doped with Eu2+ and Ce3+ was synthesized via traditional solid-state reaction in the weak reducing atmosphere. X-ray diffractometer (XRD), field-emission scanning electron microscope (FE-SEM) and energy dispersive X-ray (EDX) spectroscope were employed to characterize its crystal phases, surface morphology and elements composition. The photoluminescence (PL) properties were characterized by PL Spectrophotometer. It was found that the excitation wavelength played a significant role in photoluminescence emission intensity.

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