Chemical ordering in lanthanum-doped lead magnesium niobate relaxor ferroelectrics probed by A1g Raman mode

2001 ◽  
Vol 79 (24) ◽  
pp. 3938-3940 ◽  
Author(s):  
Fuming Jiang ◽  
Seiji Kojima ◽  
Changlei Zhao ◽  
Chude Feng
Keyword(s):  
Relaxor Ferroelectrics ◽  
Lead Magnesium Niobate ◽  
Raman Mode ◽  
Magnesium Niobate ◽  
Chemical Ordering ◽  
Lead Magnesium

The dielectric relaxation of lead magnesium niobate relaxor ferroelectrics

1991 ◽  
Vol 64 (3) ◽  
pp. 335-344 ◽  
Author(s):  
Dwight Viehland ◽  
S. Jang ◽  
L. Eric Cross ◽  
Manfred Wuttig
Keyword(s):  
Dielectric Relaxation ◽  
Relaxor Ferroelectrics ◽  
Lead Magnesium Niobate ◽  
Magnesium Niobate ◽  
Lead Magnesium

The effect of ferroelastic coupling in controlling the abnormal aging behavior in lead magnesium niobate-lead titanate relaxor ferroelectrics

1997 ◽  
Vol 12 (7) ◽  
pp. 1777-1784 ◽  
Author(s):  
Q. M. Zhang ◽  
J. Zhao ◽  
T. R. Shrout ◽  
L. E. Cross
Keyword(s):  
Lead Titanate ◽  
Piezoelectric Coefficient ◽  
Hot Isostatic Pressing ◽  
Bias Field ◽  
Relaxor Ferroelectrics ◽  
Lead Magnesium Niobate ◽  
Relaxor Behavior ◽  
Aging Behavior ◽  
Magnesium Niobate ◽  
Lead Magnesium

The abnormal aging behavior, i.e., severe aging in the electric field induced piezoelectric coefficient while very weak dielectric aging, observed in the relaxor ferroelectric lead magnesium niobate-lead titanate (PMN-PT) ceramics under a dc electric bias field, can be significantly reduced by hot isostatic pressing (HIP) treatment on presintered samples. The aging can also be reduced by doping suitable amounts of either La (donor) or Mn (acceptor). We suggest that the reduction in the aging is due to the introduction of additional random fields into the material, which reduces the probability of the growth of micropolar regions into metastable and/or stable macropolar domains. The abnormal aging behavior and the effectiveness of HIP in reducing it indicate the importance of the elastic energy in controlling the aging and relaxor behavior in PMN-PT relaxor ferroelectrics.

scholarly journals Aperiodic oscillations in thermal focussing by single crystals of lead magnesium niobate

1996 ◽  
Vol 186 (1) ◽  
pp. 17-20 ◽  
Author(s):  
Richard O'sullivan ◽  
Xiping Zheng ◽  
James Scott ◽  
Zuoguang Ye ◽  
Hans Schmid
Keyword(s):  
Single Crystals ◽  
Lead Magnesium Niobate ◽  
Magnesium Niobate ◽  
Lead Magnesium
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