Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study
Lock-in infrared thermography (LIT) was used to obtain the reversible adiabatic temperature change (ΔTadrev) from an oscillating magnetic field up to a maximum of 1.5 T. Several paradigmatic magnetocaloric materials exhibiting diverse thermomagnetic phase transitions were studied: (1) Gd, undergoin...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525007920 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850104084840841216 |
|---|---|
| author | Jorge Revuelta-Losada Aun N. Khan Luis M. Moreno-Ramírez Jia Yan Law Anit K. Giri Victorino Franco |
| author_facet | Jorge Revuelta-Losada Aun N. Khan Luis M. Moreno-Ramírez Jia Yan Law Anit K. Giri Victorino Franco |
| author_sort | Jorge Revuelta-Losada |
| collection | DOAJ |
| description | Lock-in infrared thermography (LIT) was used to obtain the reversible adiabatic temperature change (ΔTadrev) from an oscillating magnetic field up to a maximum of 1.5 T. Several paradigmatic magnetocaloric materials exhibiting diverse thermomagnetic phase transitions were studied: (1) Gd, undergoing a second-order transition; (2) LaFe11.38Mn0.28Si1.34-H undergoing a magneto-elastic first-order transition; and (3) Ni48.6Mn35.9In15.5 and (4) Ni36Co14Mn35Ti15 Heusler alloys, both undergoing magneto-structural first-order transition with varying degrees of overlap with the second-order transition of austenite and associated hysteresis. LIT increases ΔTadrev resolution by two orders of magnitude compared to traditional thermography. This advanced capability facilitates the detection of features in the responses that would otherwise be challenging to identify. Furthermore, the phase Φ with respect to the excitation serves as an indicator of the phase transition dynamics. Importantly, while the ΔTadrev measurements remain reversible against field oscillations, first-order thermomagnetic phase transitions driven by non-saturating fields show different behaviors for heating and cooling curves, manifesting thermal hysteresis and the irreversibility of the transition under those conditions. This highlights the significance of direct characterization methods of the magnetocaloric response over indirect approaches and its usefulness for the design of materials for efficient refrigeration devices. |
| format | Article |
| id | doaj-art-cb2ea329fdab4fc5a4583e90cfb9a018 |
| institution | DOAJ |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-cb2ea329fdab4fc5a4583e90cfb9a0182025-08-20T02:39:24ZengElsevierMaterials & Design0264-12752025-08-0125611437210.1016/j.matdes.2025.114372Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography studyJorge Revuelta-Losada0Aun N. Khan1Luis M. Moreno-Ramírez2Jia Yan Law3Anit K. Giri4Victorino Franco5Multidisciplinary Unit for Energy Science, Departamento de Física de la Materia Condensada, ICMS-CSIC, Universidad de Sevilla, P.O. Box 1065, 41080 Sevilla, SpainMultidisciplinary Unit for Energy Science, Departamento de Física de la Materia Condensada, ICMS-CSIC, Universidad de Sevilla, P.O. Box 1065, 41080 Sevilla, SpainDepartment of Applied Physics, Facultad CC. Ambientales y Bioquímica, Universidad de Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, SpainMultidisciplinary Unit for Energy Science, Departamento de Física de la Materia Condensada, ICMS-CSIC, Universidad de Sevilla, P.O. Box 1065, 41080 Sevilla, SpainDEVCOM Army Research Laboratory, Army Research Directorate, Aberdeen Proving Ground, MD 21005, USAMultidisciplinary Unit for Energy Science, Departamento de Física de la Materia Condensada, ICMS-CSIC, Universidad de Sevilla, P.O. Box 1065, 41080 Sevilla, Spain; Corresponding author.Lock-in infrared thermography (LIT) was used to obtain the reversible adiabatic temperature change (ΔTadrev) from an oscillating magnetic field up to a maximum of 1.5 T. Several paradigmatic magnetocaloric materials exhibiting diverse thermomagnetic phase transitions were studied: (1) Gd, undergoing a second-order transition; (2) LaFe11.38Mn0.28Si1.34-H undergoing a magneto-elastic first-order transition; and (3) Ni48.6Mn35.9In15.5 and (4) Ni36Co14Mn35Ti15 Heusler alloys, both undergoing magneto-structural first-order transition with varying degrees of overlap with the second-order transition of austenite and associated hysteresis. LIT increases ΔTadrev resolution by two orders of magnitude compared to traditional thermography. This advanced capability facilitates the detection of features in the responses that would otherwise be challenging to identify. Furthermore, the phase Φ with respect to the excitation serves as an indicator of the phase transition dynamics. Importantly, while the ΔTadrev measurements remain reversible against field oscillations, first-order thermomagnetic phase transitions driven by non-saturating fields show different behaviors for heating and cooling curves, manifesting thermal hysteresis and the irreversibility of the transition under those conditions. This highlights the significance of direct characterization methods of the magnetocaloric response over indirect approaches and its usefulness for the design of materials for efficient refrigeration devices.http://www.sciencedirect.com/science/article/pii/S0264127525007920Magnetocaloric effectDirect characterization measurementsLock-in thermographyHysteresisReversibilityDynamic conditions |
| spellingShingle | Jorge Revuelta-Losada Aun N. Khan Luis M. Moreno-Ramírez Jia Yan Law Anit K. Giri Victorino Franco Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study Materials & Design Magnetocaloric effect Direct characterization measurements Lock-in thermography Hysteresis Reversibility Dynamic conditions |
| title | Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study |
| title_full | Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study |
| title_fullStr | Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study |
| title_full_unstemmed | Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study |
| title_short | Magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials: A lock-in thermography study |
| title_sort | magnetic reversibility accompanied by thermal hysteresis in magnetocaloric materials a lock in thermography study |
| topic | Magnetocaloric effect Direct characterization measurements Lock-in thermography Hysteresis Reversibility Dynamic conditions |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525007920 |
| work_keys_str_mv | AT jorgerevueltalosada magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy AT aunnkhan magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy AT luismmorenoramirez magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy AT jiayanlaw magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy AT anitkgiri magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy AT victorinofranco magneticreversibilityaccompaniedbythermalhysteresisinmagnetocaloricmaterialsalockinthermographystudy |