Optical and Acoustic Grüneisen Parameter of Nano-sized Particles

Abdulrahman Khaleel Suleiman

doi:10.23918/eajse.v4i3sip19

Article Details

Optical and Acoustic Grüneisen Parameter of Nano-sized Particles

Authors:

Abdulrahman Khaleel Suleiman

Publisher:

Tishk International University

Main Topics:

Grüneisen Parameter | Debye’s Temperature | Einstein’s Temperature | Acoustic and Optical Branch | Nanoparticle

Journal:

EURASIAN JOURNAL OF SCIENCE AND ENGINEERING Vol.4 Issue 3, pp.19-30

Document Type:

Article

Publication Date:

1/2019

Document Language:

English

Document ID (Org No.):

2001364865

pISSN:

2414-5602

DOI:

10.23918/eajse.v4i3sip19

Keywords:

Abstract:

 Theoretical size dependence optical and acoustic Grüneisen parameter γop(r ) and γac(r) at room temperature (300 K) are calculated for Si nanoparticles using modified Debye-Einstein approximation model. The obtained results are used for studying the total Grüneisen parameter γ(θD(r),θE(r)). All parameters forming the model including Debye’s θD (r,T) and Einstein’s θE (r,T) temperatures and lattice volume are calculated according to their nanoscale size dependence. These values θE (r,T) and θD (r,T) for Silicon decrease with decreasing nanoparticle size, except for lattice volume and Grüneisen parameter which increases to about 2.9 times of its bulk lattice volume and total Grüneisen parameter to about 2.45 compared with bulk value when the particle diameter reaches lower than 5 nm.

Article Details

Optical and Acoustic Grüneisen Parameter of Nano-sized Particles

Authors: Abdulrahman Khaleel Suleiman

Publisher: Tishk International University

Main Topics: Grüneisen Parameter | Debye’s Temperature | Einstein’s Temperature | Acoustic and Optical Branch | Nanoparticle

Journal: EURASIAN JOURNAL OF SCIENCE AND ENGINEERING Vol.4 Issue 3, pp.19-30

Document Type: Article

Publication Date: 1/2019

Document Language: English

Document ID (Org No.): 2001364865

pISSN: 2414-5602

DOI: 10.23918/eajse.v4i3sip19

Grüneisen Parameter

Debye’s Temperature

Einstein’s Temperature

Acoustic and Optical Branch

Nanoparticle

Issues

Authors:

Abdulrahman Khaleel Suleiman

Publisher:

Tishk International University

Main Topics:

Grüneisen Parameter | Debye’s Temperature | Einstein’s Temperature | Acoustic and Optical Branch | Nanoparticle

Journal:

EURASIAN JOURNAL OF SCIENCE AND ENGINEERING Vol.4 Issue 3, pp.19-30

Document Type:

Article

Publication Date:

1/2019

Document Language:

English

Document ID (Org No.):

2001364865

pISSN:

2414-5602

DOI:

10.23918/eajse.v4i3sip19