Role of SrTiO3 Seed Layer on Low-temperature Crystallization of Pb(Zr, Ti)O3 Films Prepared by Metalorganic Chemical Vapor Deposition

2007 ◽  
Vol 1034 ◽  
Author(s):  
Ji-Won Moon ◽  
Naoki Wakiya ◽  
Takanori Kiguchi ◽  
Tomohiko Yoshioka ◽  
Tanaka Junzo ◽  
...  

AbstractRole of SrTiO3 seed layer on low-temperature crystallization of Pb(Zr, Ti)O3 (PZT) film was investigated. The SrTiO3 seeds were prepared by pulsed laser deposition (PLD) with the temperature range of 400-600 °C and PZT films were prepared by thermal MOCVD. The pyrochlore free PZT films can be successfully crystallized at around 340 °C on SrTiO3 seed layers by thermal MOCVD. It was found that the role of SrTiO3 seed layer is not only pyrochlore suppression but also perovskite promotion. It is also considered that crystallinity, surface coverage and seed layer thickness are important parameters for low-temperature crystallization and electrical properties of PZT films.

2011 ◽  
Vol 46 (10) ◽  
pp. 3537-3543 ◽  
Author(s):  
Hiroyo Segawa ◽  
Hideaki Sakurai ◽  
Reiko Izumi ◽  
Toshiharu Hayashi ◽  
Tetsuji Yano ◽  
...  

2010 ◽  
Vol 17 (03) ◽  
pp. 307-310
Author(s):  
SEONG-EON JIN ◽  
DOHAN LEE ◽  
SEUNGMOO LEE ◽  
JONG-MUN CHOI ◽  
BUMJOON KIM ◽  
...  

Cu seed layer was deposited by chemical vapor deposition using new Cu precursor, Cu(dmamb) 2. The Cu layers still need the barrier layer to prevent the diffusion, so Ta and Ti were used for the barrier layer on Si(100) . Low temperature (LT) copper buffer layer was introduced and the effect of the buffer on the Cu films was investigated. The grown Cu layers were analyzed using FESEM, XRD, and four point probe measurement. The Cu seed layers were successfully deposited using Cu(dmamb) 2 precursor. Better thickness uniformity was obtained in the Cu films with the LT Cu buffer, which lowered the electrical resistivity.


1967 ◽  
Vol 40 (2) ◽  
pp. 458-462
Author(s):  
B. Ya Teitel'baum ◽  
N. P. Anoshina

Abstract Thermographic (DTA) study reveals two independent melting regions of natural rubber crystallites and a gap between them which is determined by a sharp difference in the rates of the crystallization process. Crystallites formed at a low temperature (− 25° C) and at room temperatures are distinguished by the degree of development, but pertain to the same crystallographic form. High temperature crystals play the role of seed in low temperature crystallization. During the melting of low temperature crystallites of natural rubber, they recrystallize with a rise in the melting point (without reaching, however, room temperatures). The appearance of this phenomenon on the thermograms is determined by the relation between rates of crystallization and of heating in the course of the experiment. The rate of crystallization of natural rubber and the relative amount of crystallites formed at − 25° C were studied by DTA; the effect of rubber plasticization on these magnitudes was noted.


2021 ◽  
Vol 138 ◽  
pp. 111241
Author(s):  
Boseon Yun ◽  
Tan Tan Bui ◽  
Paul Lee ◽  
Hayeong Jeong ◽  
Seung Beom Shin ◽  
...  

2009 ◽  
Author(s):  
Tetsuo Yamamoto ◽  
Kyoko K. Tanaka ◽  
Tomonori Usuda ◽  
Motohide Tamura ◽  
Miki Ishii

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