Low-temperature crystal structure, specific heat, and dielectric properties of lithium tetraborate Li2B4O7

被引：32

作者：

Senyshyn, A. ^{[1
]}

Schwarz, B. ^{[2
]}

Lorenz, T. ^{[3
]}

Adamiv, V. T. ^{[4
]}

Burak, Ya. V. ^{[4
]}

Banys, J. ^{[5
]}

Grigalaitis, R. ^{[5
]}

Vasylechko, L. ^{[6
]}

Ehrenberg, H. ^{[2
]}

Fuess, H. ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany

[2] Inst Complex Mat, Leibniz Inst IFW Dresden, D-01171 Dresden, Germany

[3] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany

[4] Inst Phys Opt, UA-79005 Lvov, Ukraine

[5] Vilnius Univ, Fac Phys, LT-10222 Vilnius, Lithuania

[6] Lviv Polytech Natl Univ, UA-79013 Lvov, Ukraine

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 09期

关键词：

THERMAL-EXPANSION; ULTRAVIOLET APPLICATION; SINGLE-CRYSTALS; BEHAVIOR; GENERATION; LUMINESCENCE; DIFFRACTION; DIBORATE; GROWTH; RANGE;

D O I：

10.1063/1.3504244

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Coherent neutron powder diffraction experiments were carried out together with specific heat, dilatometry, and dielectric spectroscopy studies on Li2B4O7 enriched with B-11 isotope to 99.3% at low temperatures. Neither traces of phase transformations nor discontinuous changes in physical properties were observed. Negative thermal expansion, anomalous thermal behavior of selected interatomic distances/angles, isotropic displacement parameters on specific sites as well as dielectric constant were discussed in terms of dynamic lithium disorder. (C) 2010 American Institute of Physics. [doi:10.1063/1.3504244]

引用

页数：9

共 66 条

[1] THERMAL-PROPERTIES OF LI CONDUCTING SUPERIONIC MATERIALS [J].