Thermodynamic equilibrium model of pyroelectric polycrystalline thin films

被引：2

作者：

Hu, Wencheng ^{[1
]}

Yang, Chuanren ^{[1
]}

Zhang, Wanli ^{[1
]}

Liao, Xiyi ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 15期

关键词：

D O I：

10.1063/1.2721146

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This study deals with the thermodynamic equilibrium theory of pyroelectric polycrystalline thin films. The unit cell of pyroelectric polycrystalline thin films in the ferroelectric phase to be considered is assumed as a dipole and is a nondipole at its paraelectric phase. The phase transition between ferroelectric and paraelectric phases is hypothesized as an equilibrium of the dipoles and the nondipole. Based on the thermodynamic equilibrium theory, an expression formula about the spontaneous polarization and temperature is suggested. Considering the sandwich structure of pyroelectric polycrystalline thin films, an equation about the relations between pyroelectric coefficient and temperature was established. (c) 2007 American Institute of Physics.

引用

收藏

页数：3

相关论文

共 15 条

[1] Ferroelectric properties of sol-gel delivered epitaxial Pb(Zrx,Ti1-x)O3 thin films on Si using epitaxial g-Al2O3 Layers -: art. no. 202906 [J].

Akai, D ;

Yokawa, M ;

Hirabayashi, K ;

Matsushita, K ;

Sawada, K ;

Ishida, M .

APPLIED PHYSICS LETTERS, 2005, 86 (20) :1-3

[2] Dielectric hysteresis and pyroelectricity in the La0.03Sr0.255Ba0.7Nb2-yTiyO(6-y)/2 ferroelectric ceramic system [J].

Amorín, H ;

Portelles, J ;

Guerrero, F ;

Pérez, J ;

Siqueiros, JM .

SOLID STATE COMMUNICATIONS, 2000, 113 (10) :581-585

[3] Dependence of the pyroelectric response on internal stresses in ferroelectric thin films [J].

Ban, ZG ;

Alpay, SP .

APPLIED PHYSICS LETTERS, 2003, 82 (20) :3499-3501

[4] Erbium doped PZT and multilayer structures for pyroelectric applications [J].

Es-Souni, A ;

Zhang, N .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2004, 106 (01) :79-84

[5] Self-poled Pb(Zr,Ti)O3 films with improved pyroelectric properties via the use of (La0.8Sr0.2)MnO3/metal substrate heterostructures -: art. no. 022907 [J].

Es-Souni, M ;

Kuhnke, M ;

Iakovlev, S ;

Solterbeck, CH ;

Piorra, A .

APPLIED PHYSICS LETTERS, 2005, 86 (02) :022907-1

[6] Highly a-axis-oriented Nb-doped Pb(TixZr1-x)O3 thin films grown by sol-gel technique for uncooled infrared dectors [J].

Han, H ;

Song, XY ;

Zhong, J ;

Kotru, S ;

Padmini, P ;

Pandey, RK .

APPLIED PHYSICS LETTERS, 2004, 85 (22) :5310-5312

[7] Substrate effects on the properties of the pyroelectric thin film IR detectors [J].

Ko, JS ;

Liu, WG ;

Zhu, WG .

SENSORS AND ACTUATORS A-PHYSICAL, 2001, 93 (02) :117-122

[8]

Landau L. D., 1980, STAT PHYS 1, V5, P446

[9] Preparation of (Ba, Sr)TiO3 thin films with high pyroelectric coefficients at ambient temperatures [J].

Lee, JS ;

Park, JS ;

Kim, JS ;

Lee, JH ;

Lee, YH ;

Hahn, SR .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1999, 38 (5B) :L574-L576

[10] Effect of operating temperature and film thickness on the pyroelectric response of ferroelectric materials [J].

Sharma, A ;

Ban, ZG ;

Alpay, SP ;

Mantese, JV .

APPLIED PHYSICS LETTERS, 2004, 84 (24) :4959-4961