A NEW STRUCTURAL MODEL FOR LITHIUM-NIOBATE

被引：2

作者：

VYAS, JC

KOTHIYAL, GP

GHOSH, B

GUPTA, MK

机构：

[1] Bhabha Atomic Research Centre, Technical Physics and Prototype Engineering Division, Bombay

[2] Calcutta, 700027, Flat No. 34, 30, Belvedere Road Alipur

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 1995年 / 30卷 / 02期

关键词：

D O I：

10.1002/crat.2170300216

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A new model based on the crystal field theory is proposed for LiNbO3. According to this the central position of the Nb ions in oxygen octahedra is energetically unstable leading to the splitting of the potential energy curve into the one having two equivalent off-centered minima. The phase transition temperature T-c is related to the average height of the barrier existing between these energy minima. The model explains satisfactorily some of the properties of LiNbO3 in the paraelectric and ferroelectric phases, which were not fully understood by earlier models.

引用

收藏

页码：217 / 222

页数：6

相关论文

共 26 条

[1] FERROELECTRIC LITHIUM NIOBATE .5. POLYCRYSTAL X-RAY DIFFRACTION STUDY BETWEEN 24 DEGREES AND 1200 DEGREES C [J].

ABRAHAMS, SC ;

LEVINSTEIN, HJ ;

REDDY, JM .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1966, 27 (6-7) :1019-+

[2] FERROELECTRIC LITHIUM NIOBATE .3. SINGLE CRYSTAL X-RAY DIFFRACTION STUDY AT 24 DEGREES C [J].

ABRAHAMS, SC ;

REDDY, JM ;

BERNSTEIN, JL .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1966, 27 (6-7) :997-+

[3] FERROELECTRIC LITHIUM TANTALATE .3. TEMPERATURE-DEPENDENCE OF STRUCTURE IN FERROELECTRIC PHASE AND PARAELECTRIC STRUCTURE AT 940 DEGREES K [J].

ABRAHAMS, SC ;

BUEHLER, E ;

HAMILTON, WC ;

LAPLACA, SJ .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1973, 34 (03) :521-532

[4] DEFECT STRUCTURE DEPENDENCE ON COMPOSITION IN LITHIUM-NIOBATE [J].

ABRAHAMS, SC ;

MARSH, P .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1986, 42 :61-68

[5] FERROELECTRIC LITHIUM NIOBATE .4. SINGLE CRYSTAL NEUTRON DIFFRACTION STUDY AT 24 DEGREES C [J].

ABRAHAMS, SC ;

HAMILTON, WC ;

REDDY, JM .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1966, 27 (6-7) :1013-&

[6] GUIDED-WAVE DEVICES FOR OPTICAL COMMUNICATION [J].

ALFERNESS, RC .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1981, 17 (06) :946-959

[7] EFFICIENT 2ND-HARMONIC GENERATION OF ND-YAG LASER-RADIATION USING WARM PHASEMATCHING LINBO3 [J].

BYER, RL ;

PARK, YK ;

FEIGELSON, RS ;

KWAY, WL .

APPLIED PHYSICS LETTERS, 1981, 39 (01) :17-19

[8] NONSTOICHIOMETRY AND CRYSTAL GROWTH OF LITHIUM NIOBATE [J].

CARRUTHE.JR ;

PETERSON, GE ;

GRASSO, M ;

BRIDENBA.PM .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (05) :1846-+

[9]

Dunn TM, 1965, SOME ASPECTS CRYSTAL

[10] HIGH TEMPERATURE TRANSPORT PROCESSES IN LITHIUM NIOBATE [J].

JORGENSE.PJ ;

BARTLETT, RW .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (12) :2639-&