Kinh doanh - Marketing
Kinh tế quản lý
Biểu mẫu - Văn bản
Tài chính - Ngân hàng
Công nghệ thông tin
Tiếng anh ngoại ngữ
Kĩ thuật công nghệ
Khoa học tự nhiên
Khoa học xã hội
Văn hóa nghệ thuật
Sức khỏe - Y tế
Văn bản luật
Nông Lâm Ngư
Kỹ năng mềm
Luận văn - Báo cáo
Giải trí - Thư giãn
Tài liệu phổ thông
Văn mẫu
Giới thiệu
Đăng ký
Đăng nhập
Tìm
Danh mục
Kinh doanh - Marketing
Kinh tế quản lý
Biểu mẫu - Văn bản
Tài chính - Ngân hàng
Công nghệ thông tin
Tiếng anh ngoại ngữ
Kĩ thuật công nghệ
Khoa học tự nhiên
Khoa học xã hội
Văn hóa nghệ thuật
Y tế sức khỏe
Văn bản luật
Nông lâm ngư
Kĩ năng mềm
Luận văn - Báo cáo
Giải trí - Thư giãn
Tài liệu phổ thông
Văn mẫu
Thông tin
Điều khoản sử dụng
Quy định bảo mật
Quy chế hoạt động
Chính sách bản quyền
Giới thiệu
Đăng ký
Đăng nhập
0
Trang chủ
Khoa Học Tự Nhiên
Vật lý
Influence of lithium content on the structure and ionic conductivity of perovskite La(2/3)−xLi3xTiO3 made by double mechanical alloying method
Đang chuẩn bị liên kết để tải về tài liệu:
Influence of lithium content on the structure and ionic conductivity of perovskite La(2/3)−xLi3xTiO3 made by double mechanical alloying method
Xuân Loan
67
7
pdf
Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
In these samples, a change of symmetry from tetragonal to orthorhombic is observed for sample with lithium content x = 0.06. Structural modifications were obtained mainly due to the cation vacancies ordering along the c-axis, which disappeared gradually when the lithium content increased. At room temperature, the maximum values of grains and grain boundaries conductivities of the La(2/3)−xLi3xTiO3 samples were found to be of 1.5×10−3 S/cm and 5.8×10−5 S/cm, respectively. The temperature dependence of ionic conductivity obeyed a non-Arrhenius behaviour. At temperature from 30 to 125 oC, the activation energy for grain and grain-boundary conductivity was found to be of ∼ 0.23 eV and ∼ 0.32 eV, respectively. | Communications in Physics, Vol. 24, No. 3S1 (2014), pp. 33-39 DOI:10.15625/0868-3166/24/3S1/5074 INFLUENCE OF LITHIUM CONTENT ON THE STRUCTURE AND IONIC CONDUCTIVITY OF PEROVSKITE La(2/3)−x Li3x TiO3 MADE BY DOUBLE MECHANICAL ALLOYING METHOD LE DINH TRONG Hanoi Pedagogical University No.2 E-mail: trongldsp2@gmail.com Received 20 June 2014 Accepted for publication 20 August 2014 Abstract. Perovskite La(2/3)−x Li3x TiO3 samples with 0.06 6 x 6 0.15 were prepared by a double mechanical alloying method. Structure and Li+ -ion conductive properties of the La(2/3)−x Li3x TiO3 samples were investigated. Most of the analyzed perovskite samples exhibit a double unit cell. In these samples, a change of symmetry from tetragonal to orthorhombic is observed for sample with lithium content x = 0.06. Structural modifications were obtained mainly due to the cation vacancies ordering along the c-axis, which disappeared gradually when the lithium content increased. At room temperature, the maximum values of grains and grain boundaries conductivities of the La(2/3)−x Li3x TiO3 samples were found to be of 1.5×10−3 S/cm and 5.8×10−5 S/cm, respectively. The temperature dependence of ionic conductivity obeyed a non-Arrhenius behaviour. At temperature from 30 to 125 o C, the activation energy for grain and grain-boundary conductivity was found to be of ∼ 0.23 eV and ∼ 0.32 eV, respectively. Keywords: double mechanical alloying; perovskite structure; lithium onic conductivity, impedance spectra. I. INTRODUCTION Recently, ionic conducting solid materials have received considerable attention due to their potential applications in all-solid-state ionic batteries, energy storage and conversion, electrochromic displays, and in environmental monitoring electrochemical sensors, etc [1]. These materials are non-toxic solid electrolytes exhibiting easy preservation and comfortable use. From many works it is seen that a family of the perovskite structure of La(2/3)−x Li3x TiO3 .
TÀI LIỆU LIÊN QUAN
The impact of social influence on university choice
Lecture Social Psychology - Chapter 8: Group Influence
GENUINENESS OF ASSENT AND UNDUE INFLUENCE
Family influence on business: Application of a modified F-PEC scal to private small business in Vietnam
The influence of weaning time on the growth of piglets and reproductive performance of sows in Viet Yen district, Bac Giang province
Seasonal influence on yield of maize and its validation with CERES-Maize Model M. Swetha Sree*, T. Prathima, V. Rajarajeswari
Impact study of influence of agricultural mass media programme on farmers
Cultural influence on English testing and evaluation
Instagram influence on clothing purchases – An eye-opener
Influence of synthesis factors on properties of geopolymers based on red mud and rice husk ash
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.