The effect of domain structures on the transparency of PMN–PT Transparent Ceramics

Electric Field‐Induced Light Scattering in Eu‐Doped PMN‐PT Transparent Ceramics

“…Figure shows the XRD patterns of the samples. No pyrochlore phase is detected and all diffraction peaks can be attributed to pure perovskite structure, which is similar to the results of La‐doped 0.75PMN‐0.25PT at lower doping levels and indicates that Eu doping in our samples could not lead to an obvious change of phase structure that is crucial for the transparency of ferroelectric ceramics.…”

“…For 4%Eu‐0.75PMN‐0.25PT transparent ceramics, the transmittance was about 58% for infrared wavelength. Considering the optical reflection loss around 29% for infrared wavelength in PMN‐PT materials, our ceramics exhibit relatively high transparency about 87% when neglecting the reflection loss by proper antireflection coating . It should be noted that the Eu ions in our samples should be Eu 3+ considering the preparation process, and no absorption peaks of luminescent Eu 3+ were observed, which is different from Er‐doped 0.75PMN‐0.25PT transparent ceramics .…”

“…Meanwhile, pores existing in ferroelectric ceramics should be eliminated as far as possible and clean grain boundaries with abstention from defects and impurities are also needed to minimize light scattering. In addition to all the above factors, the sizes of ferroelectric domains, which could be influenced by external electric field, play a quite significant role in the intensity of transmitted light in transparent ferroelectric ceramics since the incident light could be scattered by domain walls …”

“…In addition to all the above factors, the sizes of ferroelectric domains, which could be influenced by external electric field, play a quite significant role in the intensity of transmitted light in transparent ferroelectric ceramics since the incident light could be scattered by domain walls. [6][7][8][9] For the past few years, research about Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) transparent ceramics, known as relaxor ferroelectrics, has drew much attention due to their excellent electro-optic(EO) performance. Uchino found a large quadratic EO effect in 0.88PMN-0.12PT with a quadratic EO coefficient of R = 22 9 10 À16 (m/v) 2 which was more than twice in the famous La-doped Pb(Zr 0.65 , Ti 0.35 )O 3 [about 9 9 10 À16 (m/v) 2 ].…”

Ho3+‐doped (K, Na)NbO3‐based multifunctional transparent ceramics with superior optical temperature sensing performance

“…Highly transparent ceramics usually show high density with few pores, high phase purity, small‐sized grains, cubic (or near cubic) phase with an isotropic lattice structure and smooth surface in order to extremely eliminate light scattering . Lead‐based transparent ceramics such as (Pb, La)(Zr, Ti)O 3 (PLZT) have wide application in electro‐optic field.…”