Thermal Conductivity and Nonlinear Temperature Dependent Raman Line-Shape Asymmetry in Spinel Co<sub>3</sub>O<sub>4</sub>: Inhomogeneous Laser Heating Revisited
Inhomogeneous laser heating has been revisited here in nanocrystalline Co<sub>3</sub>O<sub>4</sub> by means of laser flux dependent Raman scattering experiments. The exploration of microscopic phenomena in nanoscale semiconductors is pivotal for their integration into various industrial applications. Notably, the presence of laser heating effects in such systems serves as a crucial tool for investigating the quantum properties of materials. The evolution of asymmetric Raman line-shapes with increasing laser flux reveals an entirely distinct behavior of the A<sub>1g</sub> Raman band in Co<sub>3</sub>O<sub>4</sub> nanoparticles compared to their microcrystalline and bulk counterparts. This phenomenon has been further substantiated through the estimation of the local temperature rise and the corresponding thermal conductivity across three different dimensions of Co<sub>3</sub>O<sub>4</sub>. These findings offer profound insight into the thermal and quantum dynamics of nanostructured materials.
Authors
- P. K. Rout (ORCID: https://orcid.org/0000-0001-8149-6180)
- Deb Kumar Rath (ORCID: https://orcid.org/0009-0007-4637-3194)
- Sharmistha Singh
- Rajesh Kumar (ORCID: https://orcid.org/0000-0001-7977-986X)
- Anjali Chaudhary (ORCID: https://orcid.org/0000-0002-8202-2697)
- Subin Kaladi Chondath
- Bhumika Sahu (ORCID: https://orcid.org/0009-0000-6517-072X)
- Soumya Tiwari (ORCID: https://orcid.org/0009-0006-4314-8146)
- Love Bansal (ORCID: https://orcid.org/0000-0003-1799-8260)
- Saumya Srivastava (ORCID: https://orcid.org/0000-0003-2880-9330)
- Shivam Kumar (ORCID: https://orcid.org/0000-0002-1257-0962)
- Nikita Ahlawat (ORCID: https://orcid.org/0009-0009-1844-9803)
Institutions
- Physical Devices (United States) (US)
- Indian Institute of Technology Bhilai (IN)
- Centre of Excellence for Advanced Materials (CN)
- Indian Institute of Technology Indore (IN)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2025-05-29
- DOI
- https://doi.org/10.1021/acs.jpclett.5c00935
- Citations
- 2
- Primary Topic
- Nonlinear Optical Materials Studies
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- Department of Science and Technology, Ministry of Science and Technology, India
- Council of Scientific and Industrial Research, India
- University Grants Commission
- Ministry of Education, India
- Indian Institute of Technology Indore
- Science and Engineering Research Board