Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys
Cryogenic magnetic refrigeration is a highly efficient and environmentally friendly technique for gas liquefaction. However, refrigerant materials undergoing large magnetocaloric response at the interesting cryogenic range are dominated by critical elements (mainly rare-earth elements) which impedes...
| Authors: | ; ; ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2023 |
| Country: | España |
| Institution: | Universidad de Sevilla (US) |
| Repository: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/152172 |
| Online Access: | https://hdl.handle.net/11441/152172 https://doi.org/10.1016/j.jallcom.2023.172938 |
| Access Level: | Open access |
| Keyword: | All-d-metal Heusler alloys Ni(Co)-Mn-Ti Magnetostructural transition Magnetocaloric effect |
| _version_ | 1878731863656235008 |
|---|---|
| author | Khan, Aun N. |
| author2 | Díaz García, Álvaro Moreno Ramírez, Luis Miguel Law, Jia Yan Franco García, Victorino |
| author2_role | author author author author |
| author_browse | Díaz García, Álvaro Franco García, Victorino Khan, Aun N. Law, Jia Yan Moreno Ramírez, Luis Miguel |
| author_facet | Khan, Aun N. Díaz García, Álvaro Moreno Ramírez, Luis Miguel Law, Jia Yan Franco García, Victorino |
| author_role | author |
| collection | idUS. Depósito de Investigación de la Universidad de Sevilla |
| description | Cryogenic magnetic refrigeration is a highly efficient and environmentally friendly technique for gas liquefaction. However, refrigerant materials undergoing large magnetocaloric response at the interesting cryogenic range are dominated by critical elements (mainly rare-earth elements) which impedes practical applicability of such refrigeration systems. Therefore, there is a need for dedicated investigations on optimization of magnetocaloric response at cryogenic range by utilizing compositions that are rare-earth free. In this work, we synthesize the mechanically stable and rare-earth free, all-d-metal Ni35Co15Mn35Ti15 Heusler alloys and investigate the role of varying Mn:Ni ratio on the magnetostructural and magnetocaloric properties of the alloy system. The results of the microstructural characterization indicate homogenous composition for the investigated alloy series. As the Mn:Ni ratio increases from 1.01 to 1.10, the martensitic transition shifts from near-room temperature down to cryogenic region (120–140 K) while the magnetization of the austenitic phase remains unaltered. Isothermal entropy change as high as ∼ 13 J kg−1 K−1 at 1.5 T is achieved for the sample with the highest Mn:Ni ratio at the temperature region for natural gas liquefaction, which significantly surpasses the values previously reported in the literature for similar alloys. In addition to large magnetocaloric response, the martensitic transformation falls in an interesting temperature of the cryogenic region, paving the way for various low-temperature magnetocaloric applications. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_381ffbbb0d7d1e3bf05b3d98c5ca7ca3 |
| institution | Universidad de Sevilla (US) |
| instname_str | Universidad de Sevilla (US) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:idus.us.es:11441/152172 |
| publishDate | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | idUS. Depósito de Investigación de la Universidad de Sevilla |
| spelling | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys Khan, Aun N. Díaz García, Álvaro Moreno Ramírez, Luis Miguel Law, Jia Yan Franco García, Victorino All-d-metal Heusler alloys Ni(Co)-Mn-Ti Magnetostructural transition Magnetocaloric effect Cryogenic magnetic refrigeration is a highly efficient and environmentally friendly technique for gas liquefaction. However, refrigerant materials undergoing large magnetocaloric response at the interesting cryogenic range are dominated by critical elements (mainly rare-earth elements) which impedes practical applicability of such refrigeration systems. Therefore, there is a need for dedicated investigations on optimization of magnetocaloric response at cryogenic range by utilizing compositions that are rare-earth free. In this work, we synthesize the mechanically stable and rare-earth free, all-d-metal Ni35Co15Mn35Ti15 Heusler alloys and investigate the role of varying Mn:Ni ratio on the magnetostructural and magnetocaloric properties of the alloy system. The results of the microstructural characterization indicate homogenous composition for the investigated alloy series. As the Mn:Ni ratio increases from 1.01 to 1.10, the martensitic transition shifts from near-room temperature down to cryogenic region (120–140 K) while the magnetization of the austenitic phase remains unaltered. Isothermal entropy change as high as ∼ 13 J kg−1 K−1 at 1.5 T is achieved for the sample with the highest Mn:Ni ratio at the temperature region for natural gas liquefaction, which significantly surpasses the values previously reported in the literature for similar alloys. In addition to large magnetocaloric response, the martensitic transformation falls in an interesting temperature of the cryogenic region, paving the way for various low-temperature magnetocaloric applications. Air Force Office of Scientific Research FA8655–21-1–7044 HyLICAL 101101461 Junta de Andalucía EMC21_00418 Premio Mensual Publicación Científica Destacada de la US. Facultad de Física Elsevier https://hdl.handle.net/11441/152172 https://doi.org/10.1016/j.jallcom.2023.172938 |
| spellingShingle | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys Khan, Aun N. All-d-metal Heusler alloys Ni(Co)-Mn-Ti Magnetostructural transition Magnetocaloric effect |
| status_str | publishedVersion |
| title | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| title_full | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| title_fullStr | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| title_full_unstemmed | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| title_short | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| title_sort | Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys |
| topic | All-d-metal Heusler alloys Ni(Co)-Mn-Ti Magnetostructural transition Magnetocaloric effect |
| topic_facet | All-d-metal Heusler alloys Ni(Co)-Mn-Ti Magnetostructural transition Magnetocaloric effect |
| url | https://hdl.handle.net/11441/152172 https://doi.org/10.1016/j.jallcom.2023.172938 |