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Phase Transformations in Mn–Al and Mn–Bi Magnets by Repeated Heat Treatment

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Abstract

A stepped heating cycle in a tube furnace at 1000 °C for 1 h followed by holding at 400 °C for 1 h directly increases the amount of ferromagnetic τ-phase of manganese–aluminum (Mn–Al). Repeating this heating regime for 2 more times, further increase in the amount and uniform distribution of the τ-phase is obtained at the expense of the ε-phase. The magnetization and coercivity are increased after each heating cycle, and the effect is more pronounced when 2% carbon (C) is added to Mn–Al. When the similar heat treatment cycle is applied to manganese–bismuth (Mn–Bi), the ferromagnetic α-phase is detected with larger magnetizations, but substantial Mn and Bi are segregated from the alloy. This solid-state diffusion in tube furnace offers a facile route to improve rare-earth-free magnets.

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References

  1. Baba A A, Abdulkareem A Y, Raji M A, Ayinla K I, Adekola F A, Bale R B, and Ghosh M K, Trans Indian Inst Met71 (2018) 2453.

    Article  CAS  Google Scholar 

  2. El-Kashif E F, and Morsy M A, Adv Mater Res Int J7 (2018) 195.

    Google Scholar 

  3. Poudyal N, and Liu J P, J Phys D: Appl Phys46 (2013) 043001.

    Article  Google Scholar 

  4. Li D, Pan D, Li S, and Zhang Z D, Sci China: Phys Mech Astron59 (2016) 617501.

    Google Scholar 

  5. Hirosawa S, Nishino M, and Miyashita S, Adv Nat Sci: Nanosci Nanotechnol8 (2017) 013002.

    Google Scholar 

  6. Cui J, Kramer M, Zhou L, Liu F, Gabay A, Hadjipanayis G, Balasubramanian B, and Sellmyer D, Acta Mater158 (2018) 118.

    Article  CAS  Google Scholar 

  7. Patel K. Zhang J M, and Ren S Q, Nanoscale10 (2018) 11701.

    Article  CAS  Google Scholar 

  8. Yang J B, Yang W Y, Shao Z Y, Liang D, Zhao H, Xia Y H, and Yang Y B, Chin Phys B27 (2018) 117503.

    Article  CAS  Google Scholar 

  9. Crisan A D, Vasiliu F, Nicula R, Bartha C, Mercioniu I, and Crisan O, Mater Charact140 (2018) 1.

    Article  CAS  Google Scholar 

  10. Jia Y X, Wu Y Y, Zhao S, Wang J M, and Jiang C B, Intermetallics96 (2018) 41.

    Article  CAS  Google Scholar 

  11. Xiang Z, Song Y M, Deng B W, Cui E B, Yu L Z, and Lu W, J Alloys Compd783 (2019) 416.

    Article  CAS  Google Scholar 

  12. Sato S, and Irie S, AIP Adv9 (2019) 035015.

    Article  Google Scholar 

  13. Nguyen T X, and Nguyen V V, J Mater Sci: Mater Electron30 (2019) 6888.

    CAS  Google Scholar 

  14. Nguyen V T, Calvayrac F, Bajorek A, and Randrianantoandro N, J Magn Magn Mater462 (2018) 96.

    Article  CAS  Google Scholar 

  15. Xiang Z, Wang X, Song Y M, Yu L Z, Cui E B, Deng B W, Batalu D, and Lu W, J Magn Magn Mater475 (2019) 479.

    Article  CAS  Google Scholar 

  16. Zhao S, Wu Y Y, Zhang C, Wang J M, Fu Z H, Zhang R F, and Jiang C B, J Alloys Compd755 (2018) 257.

    Article  CAS  Google Scholar 

  17. Salazar D, Martın-Cid A, Madugundo R, Barandiaran J M, Hadjipanayis G C, Appl Phys Lett113 (2018) 152402.

  18. Xiang Z, Deng B W, Zhang X, Wang X, Cui E B, Yu L Z, Song Y M, and Lu W, Intermetallics116 (2020) 106638.

    Article  CAS  Google Scholar 

  19. Gabay A M, and Hadjipanayis G C, JOM67 (2015) 1329.

    Article  CAS  Google Scholar 

  20. Qian H D, Si P Z, Choi C J, Park J, and Cho K M, AIP Adv8 (2018) 056216.

    Article  Google Scholar 

  21. Shafeie S, Fang H L, Hedlund D, Nyberg A, Svedlindh P, Gunnarsson K, and Sahlberg M, J Solid State Chem274 (2019) 229.

    Article  CAS  Google Scholar 

  22. Ramakrishana V V, Kavita S, Gautam R, Ramesh T, and Gopalan R, J Magn Magn Mater458 (2018) 23.

    Article  Google Scholar 

  23. Kontos S, Fang H L, Li J H, Delczeg-Czirjak E K, Shafeie S, Svedlindh P, Sahlberg M, and Gunnarsson K, J Magn Magn Mater474 (2019) 591.

    Article  CAS  Google Scholar 

  24. Qian H D, Si P Z, Park J, Cho K M, and Choi C J, J Electron Mater48 (2019) 1395.

    Article  CAS  Google Scholar 

  25. Liu Z W, Su K P, Cheng Y T, and Ramanujan R V, Mater Sci Eng Adv Res1 (2015) 12.

    Article  Google Scholar 

  26. Si P Z, Park J, Qian H D, Choi C J, Li Y S, and Ge H, Bull Mater Sci42 (2019) 95.

    Article  Google Scholar 

  27. Vorokh A S, Nanosystem: Phys Chem Math9 (2018) 364.

  28. Janatova I, Svec Sr P, Svec P, Matko I, Janickovic D, Kunca B, Marcin J, and Skorvanek I, J Alloys Compd749 (2018) 128.

    Article  Google Scholar 

  29. Lewis L H, and Crew D C, Mat Res Soc Symp Proc703 (2002) 565.

    CAS  Google Scholar 

  30. Lu W, Niu J C, Wang T L, Xia K, Xiang Z, Song Y M, Mi Z L, Zhang W F, Tian W, and Yan Y, J Alloys Compd685 (2016) 992.

    Article  CAS  Google Scholar 

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Acknowledgements

This project was funded by Thailand Excellent Center in Physics under Grant number ThEP-60-PIP-WU3 and partially supported by the New Strategic Research (P2P) project, Walailak University, Thailand. The technical assistance by Panita Thongjumpa is acknowledged.

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Authors and Affiliations

  1. Division of Physics, School of Science, Walailak University, 222 Thaiburi, Thasala, Nakhon Si Thammarat, 80160, Thailand

    P. Saetang & C. Sirisathitkul

  2. Thailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400, Thailand

    P. Saetang, T. Charoensuk & C. Sirisathitkul

  3. Functional Materials and Nanotechnology Center of Excellence, Walailak University, 222 Thaiburi, Thasala, Nakhon Si Thammarat, 80160, Thailand

    T. Charoensuk, U. Boonyang & C. Sirisathitkul

  4. Division of Chemistry, School of Science, Walailak University, 222 Thaiburi, Thasala, Nakhon Si Thammarat, 80160, Thailand

    U. Boonyang

  5. Department of Physics, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand

    P. Jantaratana

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  1. P. Saetang
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  2. T. Charoensuk
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Correspondence to C. Sirisathitkul.

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Saetang, P., Charoensuk, T., Boonyang, U. et al. Phase Transformations in Mn–Al and Mn–Bi Magnets by Repeated Heat Treatment. Trans Indian Inst Met 73, 929–936 (2020). https://doi.org/10.1007/s12666-020-01912-0

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  • DOI: https://doi.org/10.1007/s12666-020-01912-0

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