Sol–gel derived nanocrystalline thin films of PbTiO3 on glass substrate

Cheng, Shaodong; Kam, C. H.; Zhou, Yongqiang; Que, Wenxiu; Lam, Yee Cheong; Chan, Y. C.; Gan, Woon Siong

doi:10.1016/s0040-6090(00)01221-9

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…Moreover, it is notable that the splitting of the doublet characteristics of the tetragonal structure is not observed clearly in PTO, possibly due to the interface strain-induced tetragonal structure distortion, showing a pseudotetragonal phase in the PTO film. 20,21 Upon increasing x, the (101) and (110) peaks are partially overlapped at x ¼ 0.06 and then overlapped completely at x ¼ 0.33 (see inset of Fig. 1(a)).…”

Section: Resultsmentioning

confidence: 97%

Magnetism switching and band-gap narrowing in Ni-doped PbTiO3 thin films

Zhou

Deng

et al. 2015

Journal of Applied Physics

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Ions doping-driven structural phase transition accompanied by magnetism switching and band-gap narrowing effects has been observed in PbTi 1Àx Ni x O 3Àd (xPTNO, x ¼ 0.00, 0.06, and 0.33) thin films. With the increase of x, the xPTNO thin films exhibit not only a phase transition from the pseudotetragonal structure to a centrosymmetric cubic structure but also a drastic decrease of grain size. Moreover, the as-grown Ni-doped PbTiO 3 (PTO) thin films show obvious room-temperature ferromagnetism and an increased saturation magnetization with increasing the Ni content, in contrast to undoped PTO, which shows diamagnetism. A bound magnetic polaron model was proposed to understand the observed ferromagnetic behavior of PTO-derived perovskite thin films. Furthermore, the 0.33PTNO thin film presents a narrowed band-gap, much smaller than that of PTO, which is attributed to new states of both the highest occupied molecular orbital and the lowest unoccupied molecular orbital in an electronic structure with the presence of Ni. These findings may open up a route to explore promising perovskite oxides as candidate materials for use in multiferroics and solar-energy devices. V C 2015 AIP Publishing LLC. [http://dx.

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Section: Resultsmentioning

confidence: 97%

Magnetism switching and band-gap narrowing in Ni-doped PbTiO3 thin films

Zhou

Deng

et al. 2015

Journal of Applied Physics

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“…The precursor sol was prepared as follows: 9.552 g lead acetate (Pb(OAc) 2 , AR) with 5% excess was firstly dissolved in 10 ml glacial acetic acid, and then the solution was refluxed at 60 • C under stirring for 0.5 h. The reason why 5% excess of lead is added in the precursor is to compensate the lead loss during thermal annealing. This has been widely used in the sol-gel synthesis of PTO thin films [22,32,33]. After refluxing, the solution was cooled down to room temperature.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterization, photoluminescence and ferroelectric properties of PbTiO3 nanotube arrays

Liu

Ning

Ren

et al. 2008

Materials Science and Engineering: B

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“…It can then be seen that the tendency of the changes is related with the crystalline phase formation in the composite system. Yet still, the PbTiO 3 /NiFe 2 O 4 composite thin film exhibites almost the same ferroelectric behavior as that of the PbTiO 3 thin film [24], giving the applied electric field of 500 kV/cm without breakdown. The magnetic hysteresis loops of the thin films changing with the post heat-treatment temperature is shown in Fig.…”

Section: Resultsmentioning

confidence: 89%