Establishing the relationship of thermal physical parameters and the magnetic effects around the phase transition regions in strongly correlated electron systems.

- Two typical magnetic systems of manganite La0,7-xNaxCa0,3MnO3 (x = 0 và 0,1), Pr¬0,7A’0,3MnO3 (A’ = Ca, Sr, Ba), Pr0,7Ca0,3-xSrxMnO3 (x = 0-0,3) and Heusler alloys Ni50Mn37Sn13, Ni48Mn37Sn13Fe2, Ni48Mn37Sn13Co2 have been successful fabricated.
- Their structure and magnetic properties, as well as the magnetocaloric effect have been studied in detail.
- Critical behavior analyses have been done and poited out Pr0,7Ca0,1Sr0,2MnO3 and Pr0,7Sr0,3MnO3 exhibiting the crossover of first and second order phase transitions.
- The relationship between magnetoresistance and magnetocaloric effects has been established through the magnetoresistance, magnetocaloric effects and critical exponents around the magnetic phase transition.
- Pointed out the dependences of the magnetic entropy change (ΔSm) and the related cooling power (RCP) on the magnetic field change through the field exponents (n and N) and the critical exponents (β, γ and δ): |ΔSmax| = a×ΔHn và RCP = b×ΔHN.
- Contributed to the education of 01 PhD student.

- Establishing the relationship between magnetoresistance and magnetocaloric effects through the magnetization (M), the resistivity (ρ) and the magnetic entropy change (ΔSm).
- Pointed out the dependences of the magnetic entropy change (ΔSm) and the related cooling power (RCP) on the magnetic field change through the field exponents (n and N) and the critical exponents (β, γ and δ).

- Publications:
1. T. D. Thanh, N. T. Dung, N. T. V. Chinh, D. S. Lam, D. A. Tuan, A. G. Gamzatov, “Magnetic, magnetotransport and critical properties of polycrystalline Pr0.7Sr0.3MnO3 located at the tricritical point”, J. Alloys Compd. 884 (2021) 161046. (Q1, IF = 5.316).
2. N. T. Dung, Y. Pham, D. S. Lam, N. V. Dang, A. G. Gamzatov, A. M. Aliev, D. H. Kim, S. C. Yu, T. D. Thanh, “Critical behavior of polycrystalline Pr0.7Ca0.1Sr0.2MnO3 exhibiting the crossover of first and second order magnetic phase transitions”, J. Mater. Res. Technol. 9 (2020) 12747 (Q1, IF: 5.289).
3. A. G. Gamzatova, A. B. Batdalov, A. M. Aliev, P. D. H. Yen, S. V. Gudina, V. N. Neverov, T. D. Thanh, N. T. Dung, S. C. Yu, D. H. Kim, M. H. Phan, “Determination of the magnetocaloric effect from thermophysical parameters and their relationships near magnetic phase transition in doped manganites”, J. Magn. Magn. Mater. 513 (2020) 167209 (Q2, IF: 2.82).
4. T. D. Thanh, D. S. Lam, V. H. Ky, P. T. Thanh, P. V. Dai, N. H. Dan, “Magnetocaloric and critical properties of Ni48Mn47Sn13X2 alloys with X = Fe and Co”, The 10th International Workshop on Advanced Materials Science and Nanotechnology (IWAMSN 2021), Hanoi, Vietnam, November 4-6, 2021, Abstract book (2021) 138.
5. N T V Chinh, N T Dung, D S Lam, D C Linh, D T K Anh, T D Thanh, “Magnetocaloric effect of nanocrystalline Pr0.5Sr0.5MnO3”, Proceedings of the 12th National Conference on Solid State Physics and Materials Science, Can Tho, Vietnam, August 13-15, 2022, Vol. 1 (2022) 68.
- Education: Contributed to the education of 01 PhD student.

The joint project with code of QTRU01.06/20-21 has been completed with all the contents and products on time. We respectfully request the managements to allow the task to check and take over.