Single crystal x-ray diffraction of lead magnesium niobate-lead titanate in the transmission mode

2006 ◽  
Vol 89 (9) ◽  
pp. 092903 ◽  
Author(s):  
Alp Sehirlioglu ◽  
David A. Payne ◽  
Scott R. Wilson ◽  
Pengdi Han
Keyword(s):  
Single Crystal ◽  
Lead Titanate ◽  
Lead Magnesium Niobate ◽  
Transmission Mode ◽  
X Ray Diffraction ◽  
X Ray ◽  
Magnesium Niobate ◽  
Lead Magnesium

Growth and characterization of single-crystal lead magnesium niobate–lead titanate via high-pressure vertical Bridgman method

2004 ◽  
Vol 19 (2) ◽  
pp. 609-615 ◽  
Author(s):  
Raji Soundararajan ◽  
Rabindra Nath Das ◽  
Russ Tjossem ◽  
Amit Bandyopadhyay ◽  
Kelvin G. Lynn ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Lead Titanate ◽  
Stoichiometric Composition ◽  
Growth Direction ◽  
Lead Magnesium Niobate ◽  
X Ray ◽  
Magnesium Niobate ◽  
Vertical Bridgman ◽  
Lead Magnesium

We have grown lead magnesium niobate–lead titanate (PMN–PT) single crystals, using the high-pressure vertical Bridgman (HPVB) technique, around the stoichiometric composition of 0.7 PMN–0.3PT [0.7Pb(Mg1/3Nb2/3)O3 + 0.3(PbTiO3)]. The final ingot (about 50-mm diameter, 25-mm long) was machinable using an inner diameter saw. The room-temperature x-ray diffraction on the starting powders and the final single crystal revealed a desirable perovskite structure. The natural growth direction in most of the crystals, as determined using orientation image microscopy, was (110). Examination of the final microstructures and phases/inclusions had been done using optical and infrared microscopy, energy dispersive spectroscopy, and x-ray backscatter techniques. Microstructural characterizations of the final ingots have revealed the presence of pores filled with Mg–Si–O-rich impurity phase, usually found along the cell boundary–like structures, in all the growths. We have measured some piezoelectric properties including d33 (1200 pC/N), k33 (0.85), kt (0.5), and the dielectric constant at the Curie temperature.

A single crystal lead magnesium niobate-lead titanate multilayer-stacked cryogenic flextensional actuator

2013 ◽  
Vol 102 (4) ◽  
pp. 042906 ◽  
Author(s):  
Tian-Bing Xu ◽  
Laura Tolliver ◽  
Xiaoning Jiang ◽  
Ji Su
Keyword(s):  
Single Crystal ◽  
Lead Titanate ◽  
Lead Magnesium Niobate ◽  
Magnesium Niobate ◽  
Lead Magnesium

An Ultrasonic Motor for Use at Ultralow Temperature Using Lead Magnesium Niobate–Lead Titanate Single Crystal

2012 ◽  
Vol 51 ◽  
pp. 07GE09 ◽  
Author(s):  
Daisuke Yamaguchi ◽  
Takefumi Kanda ◽  
Koichi Suzumori ◽  
Masataka Kuroda ◽  
Dai Takeda
Keyword(s):  
Single Crystal ◽  
Lead Titanate ◽  
Ultrasonic Motor ◽  
Lead Magnesium Niobate ◽  
Magnesium Niobate ◽  
Ultralow Temperature ◽  
Lead Magnesium

Study of Microstructure in 0.9PMNTa-0.1PT Ceramics

2000 ◽  
Author(s):  
Jin T. Wang ◽  
Feng Tang
Keyword(s):  
Grain Size ◽  
Lead Titanate ◽  
Lead Magnesium Niobate ◽  
Scanning Electron Micrographs ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chemical Content ◽  
Lead Magnesium ◽  
Ta Doping ◽  
Scanning Electron

Abstract Ta-Doping effect on the microstructure of lead magnesium niobate-lead titanate crystalline solutions 0.9PbMg1/3(Nb(1−x)Tax)2/3O3-0.1PbTiO3(PMN-PT) have been firstly investigated in this paper. Scanning Electron Micrographs (SEM) were taken from fractured surfaces of the samples with different additives of x = 0.0, 0.1, 0.2, 0.3 and 1.0 by Hitachi F-2460N microscope operating at an accelerating voltage of 25kV. The chemical content analysis for the synthesized samples performed on JEOL Super Prob733 Energy Perspective Spectrum. The x-ray diffraction was carried out with a Siemens D5000 Dual Diffraction Meter. It is clearly evident that doping Ta in PMNTa-PT can affect the grain size and density of the compounds. Smaller grain size (3.1μm) is formed in the specimens with the additives of x = 0.1, 0.2 and 0.3 in comparison with those of the specimens without doping (6.6μm) or over doping (6.4μm). The porosity at grain intersections increase with increasing of additive tantalum for niobium site in 0.9PMNTa-0.1PT. Larger grain size (6.4μm), greater non-uniformity and more inter-granular voids are found in the compound, if tantalum completely substitutes niobium (x = 1). No non-reacted starting regents were observed in any of the compositions mentioned above.

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