<trans-title>Thermal and Electrcial Transport Properities of Ge Doped MnTe Thermoelectrics</trans-title>

Xunuo LOU; Houquan DENG; Shuang LI; Qingtang ZHANG; Wenjie XIONG; Guodong TANG

doi:10.15541/jim20200738

Journal of Inorganic Materials, Volume. 37, Issue 2, 209(2022)

Thermal and Electrcial Transport Properities of Ge Doped MnTe Thermoelectrics

Xunuo LOU... Houquan DENG, Shuang LI, Qingtang ZHANG, Wenjie XIONG and Guodong TANG |Show fewer author(s)

Author Affiliations

School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

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Figures & Tables(8)

1. (a) XRD patterns of the Mn_1.06-_xGe_xTe(x=0-0.04), and corresponding (b) enlarged XRD patterns between 2θ=54.3°-54.9°

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$SEM images of the fractured surfaces on Mn1.06-xGexTe (x=0-0.04)$

2. SEM images of the fractured surfaces on Mn_1.06-_xGe_xTe (x=0-0.04)

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3. (a) SEM image and (b-d) corresponding EDS element mappings of the polished Mn_1.02Ge_0.04Te

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4. Temperature dependent thermoelectric properties of Mn_1.06-_xGe_xTe (x=0-0.04)

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5. (a) Temperature dependent lattice thermal conductivities of Mn_1.06-_xGe_xTe(x=0-0.04) samples, (b) temperature dependent actual and calculated lattice thermal conductivities assumed by Callaway model for Mn_1.06Te and Mn_1.02Ge_0.04Te

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6. Temperature dependent ZT of Mn_1.06-_xGe_xTe (x=0-0.04)

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Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn_1.06-_xGe_xTe (x=0-0.04)

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Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn_1.06-_xGe_xTe (x=0-0.04)

Sample	Actual			Theoretical
Sample	Mn/%	Ge/%	Te/%	Mn/%	Ge/%	Te/%
Mn_1.06Te	52.269	0	47.731	51.456	0	48.544
Mn_1.05Ge_0.01Te	51.531	0.808	47.661	50.971	0.485	48.544
Mn_1.04Ge_0.02Te	50.903	1.491	47.606	50.485	0.971	48.544
Mn_1.03Ge_0.03Te	50.808	1.970	47.152	50.000	1.456	48.544
Mn_1.02Ge_0.04Te	51.070	2.053	46.877	49.515	1.941	48.544

Table 2. Parameters used to calculate lattice thermal conductivity based on Callaway model
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Table 2. Parameters used to calculate lattice thermal conductivity based on Callaway model
Sample A/(×10^-42, s³) B/(×10^-17, s∙K^-1) C/(×10^-16, s) l/nm
Mn_1.06Te 9 1.50 3.09 500
Mn_1.02Ge_0.04Te 22 1.50 6.49 300

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Xunuo LOU, Houquan DENG, Shuang LI, Qingtang ZHANG, Wenjie XIONG, Guodong TANG. Thermal and Electrcial Transport Properities of Ge Doped MnTe Thermoelectrics[J]. Journal of Inorganic Materials, 2022, 37(2): 209

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Paper Information

Category:

Received: Dec. 24, 2020

Accepted: --

Published Online: Nov. 14, 2022

The Author Email:

DOI:10.15541/jim20200738

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn1.06-xGexTe (x=0-0.04)

Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn1.06-xGexTe (x=0-0.04)

Table 2. Parameters used to calculate lattice thermal conductivity based on Callaway model

Table 2. Parameters used to calculate lattice thermal conductivity based on Callaway model

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Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn_1.06-_xGe_xTe (x=0-0.04)

Table 1. Actual and theoretical atomic percentages of different elements on the surfaces of Mn_1.06-_xGe_xTe (x=0-0.04)