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@article{Das:2024:10.1039/d4cp03760j,
author = {Das, K and Mazumdar, D and Das, I},
doi = {10.1039/d4cp03760j},
journal = {Phys Chem Chem Phys},
pages = {29987--30001},
title = {Structural distortion driven polaronic transport and table-like magnetocaloric properties in polycrystalline Tb0.7Sr0.3MnO3 compound.},
url = {http://dx.doi.org/10.1039/d4cp03760j},
volume = {26},
year = {2024}
}
TY - JOUR
AB - This research mainly explores the structural, magnetic, magneto-transport, and magnetocaloric properties of the polycrystalline Tb0.7Sr0.3MnO3 compound. The results reveal a significant modification of the compound's ground state with increasing the strength of the magnetic field. The strong distortion in the crystal structure highly controls the magnetic and magneto-transport properties of the system. Along with this, a prominent 'table-like' nature in the temperature-dependent magnetic entropy change has been noticed, showcasing the potential application of the compound in the field of Ericsson refrigeration technology. Notably, a substantial low-field magnetoresistance is noticed around T ∼ 60 K. The temperature dependent electrical resistivity data can be well explained with the help of polaronic transport conduction mechanisms namely small-polaron hopping and variable-range hopping models. Various significant parameters are calculated and the system possesses a non-adiabatic polaron hopping mechanism with a large electron-phonon coupling constant. This investigation contributes valuable insights into the intricate dynamics of the 3d-4f exchange interaction and crystallographic distortion, shedding light on the underlying mechanisms governing the magnetic and electrical transport properties of the Sr-doped TbMnO3 compound.
AU - Das,K
AU - Mazumdar,D
AU - Das,I
DO - 10.1039/d4cp03760j
EP - 30001
PY - 2024///
SP - 29987
TI - Structural distortion driven polaronic transport and table-like magnetocaloric properties in polycrystalline Tb0.7Sr0.3MnO3 compound.
T2 - Phys Chem Chem Phys
UR - http://dx.doi.org/10.1039/d4cp03760j
UR - https://www.ncbi.nlm.nih.gov/pubmed/39621017
VL - 26
ER -