Anisotropy of Selected Mechanical Properties of PbTe

被引：2

作者：

Adamiak, Stanislaw ^{[1
]}

Lusakowska, Elzbieta ^{[2
]}

Dynowska, Elzbieta ^{[2
]}

Minikayev, Roman ^{[2
]}

Dziawa, Piotr ^{[2
]}

Szczerbakow, Andrzej ^{[2
]}

Szuszkiewicz, Wojciech ^{[1
,2
]}

机构：

[1] Univ Rzeszow, Fac Math & Nat Sci, S Pigonia 1, PL-35310 Rzeszow, Poland

[2] Polish Acad Sci, Inst Phys, Al Lotnikow 32-46, PL-02668 Warsaw, Poland

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2019年 / 256卷 / 06期

关键词：

TOPOLOGICAL CRYSTALLINE INSULATOR; (PB; CD)TE SOLID-SOLUTION; THERMOELECTRIC-MATERIALS; ACCEPTOR IMPURITIES; ELASTIC-CONSTANTS; TEMPERATURE; HARDNESS; MODULUS; MICROHARDNESS; SCATTERING;

D O I：

10.1002/pssb.201800549

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Selected mechanical properties are investigated for single PbTe crystals using the nanoindentation method. A few values of maximum load from 5 to 50 mN were selected for the measurements using the Berkovich form of the indenter. The nanohardness and Young's modulus for (100), (110), and (111) oriented planes are determined for the bulk crystal grown by self-selecting vapor growth (SSVG) and characterized by X-ray diffraction. The values of nanohardness and Young's modulus for a thick, MBE-grown, (111)-oriented PbTe layer deposited onto BaF2 substrate obtained for the comparison, using maximum load from 1 to 20 mN, indicate a difference between the mechanical properties of bulk crystal and thick MBE-grown layer of the same material. The results suggest a much higher nanohardness value of the MBE grown layer than that of the bulk crystal. The values resulting from all measurements are compared with those given by theoretical predictions and a few existing experimental data.

引用

页数：6

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