Open AccessПодвижность ионных носителей заряда в пьезоэлектрических кристаллах Li-=SUB=-2-=/SUB=-B-=SUB=-4-=/SUB=-O-=SUB=-7-=/SUB=-
Author(s) -
Н. И. Сорокин,
Ю. В. Писаревский,
В. В. Гребенев,
V. A. Lomonov
Publication year - 2020
Publication title -
физика твердого тела
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.03.49001.631
Subject(s) - crystal (programming language) , materials science , electrode , conductivity , crystal structure , lithium (medication) , electrical resistivity and conductivity , ion , single crystal , analytical chemistry (journal) , crystallography , chemistry , electrical engineering , engineering , programming language , endocrinology , organic chemistry , chromatography , medicine , computer science
The impedance measurements of Li2B4O7 single crystal with Ag electrodes in the frequency range1-3*107 Hz at room temperature have been made. The Li2B4O7 crystal (sp. gr. I41cd, Z = 8) was oriented along crystallographic axis c. Contributions from the bulk crystal and crystal / electrode boundaries in the impedance hodograph of the Ag | Li2B4O7 | Ag system were selected. The structural mechanism of lithium-ion transport in Li2B4O7 has been discussed. Based on electrophysical and structural data, the conductivity σdc = 2.3 × 10–9 S / cm, carrier mobility (vacancies VLi) μmob = 6 × 10−10 cm2 / sV and their concentration nmob = 2.4 × 1019 cm – 3 (0.14% of the amount of lithium in the crystal lattice) have been determined.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom