Crystalline perfection and mechanical investigations on vertical Bridgman grown Bismuth telluride (Bi2Te3) single crystals for thermoelectric applications

被引：11

作者：

Krishna, Anuj ^{[1
,2
]}

Vijayan, N. ^{[2
]}

Singh, Budhendra ^{[3
,4
]}

Thukral, Kanika ^{[1
,2
]}

Maurya, K. K. ^{[2
]}

机构：

[1] CSIR, Natl Phys Lab, Acad Sci & Innovat Res, New Delhi 110012, India

[2] CSIR, Natl Phys Lab, Xray Anal & Crystal Growth Sect, Dr KS Krishnan Rd, New Delhi 110012, India

[3] Univ Aveiro, Dept Mech Engn, TEMA NRD, P-3810193 Aveiro, Portugal

[4] Univ Aveiro, Aveiro Inst Nanotechnol, P-3810193 Aveiro, Portugal

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 657卷

关键词：

X-ray diffraction; Mechanical properties; Nano-indentation; Crystal growth; Bridgman technique; NANOINDENTATION; ENHANCEMENT; BI2SE3;

D O I：

10.1016/j.msea.2016.01.033

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High efficiency thermoelectric materials plays a vital role in power generation and refrigeration applications. Bismuth telluride (Bi2Te3) is one among them. In the present work single crystal of bismuth telluride was grown using vertical Bridgman technique. The phase of grown crystals was analysed using a powder X-ray diffractometer. Quality of the grown crystal was assessed by using high resolution X-ray diffractometer and observed that it is fairly good. Further mechanical investigations on grown crystal was carried out using nano-indentation technique and various mechanical properties like hardness, stiffness and Young's modulus were evaluated. Observed results clearly indicate its suitability for thermoelectric applications. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：33 / 37

页数：5

共 20 条

[1] Nanoindentation induced piezoelectricity in SrTiO3 single crystals [J].

Bdikin, I. ;

Singh, Budhendra ;

Kumar, J. Suresh ;

Graca, M. P. F. ;

Balbashov, A. M. ;

Gracio, J. ;

Kholkin, A. L. .

SCRIPTA MATERIALIA, 2014, 74 :76-79

[2] Enhancement of SHG efficiency by urea doping in ZTS single crystals and its correlation with crystalline perfection as revealed by Kurtz powder and high-resolution X-ray diffraction methods [J].

Bhagavannarayana, G. ;

Kushwaha, S. K. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2010, 43 :154-162

[3]

Gupta M., 2014, INT J ENG INNOV TECH, V4, P128

[4] Enhancement of thermoelectric figure of merit in Bi2Se3 crystals through a necking process [J].

Gupta, Shashikant ;

Vijayan, N. ;

Krishna, Anuj ;

Thukral, Kanika ;

Maurya, K. K. ;

Muthiah, Saravanan ;

Dhar, Ajay ;

Singh, Budhendra ;

Bhagavannarayana, G. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2015, 48 :533-541

[5] Thermoelectric Properties of Bi2Te3-Related Materials Finely Grained by Mechanical Alloying and High Pressure Torsion [J].

Hamachiyo, Takashi ;

Ashida, Maki ;

Hasezaki, Kazuhiro ;

Matsunoshita, Hirotaka ;

Kai, Masaaki ;

Horita, Zenji .

MATERIALS TRANSACTIONS, 2009, 50 (07) :1592-1595

[6] Influence of Chemical Composition of Liquid Phase and Growth Process on Physical Properties of Bi2Se3, Bi2Te3 and Bi2Te2Se Compounds [J].

Hruban, A. ;

Materna, A. ;

Dalecki, W. ;

Strzelecka, G. ;

Piersa, M. ;

Jurkiewicz-Wegner, E. ;

Diduszko, R. ;

Romaniec, M. ;

Orlowski, W. .

ACTA PHYSICA POLONICA A, 2011, 120 (05) :950-953

[7] Nucleation kinetics, growth, mechanical, thermal and optical characterization of sulphamic acid single crystal [J].

Jat, Suraj Karan ;

Vijayan, N. ;

Krishna, Anuj ;

Philip, J. ;

Verma, Sunil ;

Bdikin, Igor ;

Singh, Budhendra ;

Bhagavannarayana, G. ;

Halder, S. K. .

CRYSTENGCOMM, 2013, 15 (46) :10034-10042

[8] Melt growth of bulk Bi2Te3 crystals with a natural p-n junction [J].

Kokh, K. A. ;

Makarenko, S. V. ;

Golyashov, V. A. ;

Shegai, O. A. ;

Tereshchenko, O. E. .

CRYSTENGCOMM, 2014, 16 (04) :581-584

[9] Key aspects of L-threoninium picrate single crystal: an excellent organic nonlinear optical material with a high laser-induced damage threshold [J].

Krishna, Anuj ;

Vijayan, N. ;

Gupta, Shashikant ;

Thukral, Kanika ;

Jayaramakrishnan, V. ;

Singh, Budhendra ;

Philip, J. ;

Das, Subhasis ;

Maurya, K. K. ;

Bhagavannarayana, G. .

RSC ADVANCES, 2014, 4 (99) :56188-56199

[10] AN IMPROVED TECHNIQUE FOR DETERMINING HARDNESS AND ELASTIC-MODULUS USING LOAD AND DISPLACEMENT SENSING INDENTATION EXPERIMENTS [J].

OLIVER, WC ;

PHARR, GM .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (06) :1564-1583

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