Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior
The use of perovskite manganite nanoparticles in magnetic hyperthermia has attracted significant attention due to their tunable magnetic properties and high specific absorption rate (SAR). In this work, we present a combined experimental and theoretical investigation of the frequency- and amplitude-...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/9/642 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850278650910343168 |
|---|---|
| author | Mourad Smari Monica Viorica Moisiuc Mohammad Y. Al-Haik Iordana Astefanoaei Alexandru Stancu Fedor Shelkovyi Radel Gimaev Julia Piashova Vladimir Zverev Yousef Haik |
| author_facet | Mourad Smari Monica Viorica Moisiuc Mohammad Y. Al-Haik Iordana Astefanoaei Alexandru Stancu Fedor Shelkovyi Radel Gimaev Julia Piashova Vladimir Zverev Yousef Haik |
| author_sort | Mourad Smari |
| collection | DOAJ |
| description | The use of perovskite manganite nanoparticles in magnetic hyperthermia has attracted significant attention due to their tunable magnetic properties and high specific absorption rate (SAR). In this work, we present a combined experimental and theoretical investigation of the frequency- and amplitude-dependent magnetic heating behavior of La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> (LSMO) and Dy-doped La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> (DLSMO) nanoparticles. The nanoparticles were synthesized via the sol–gel method and characterized by XRD and SEM, while SAR values were experimentally evaluated under varying magnetic field strengths (60–120 Oe) and frequencies (150–300 kHz). In parallel, theoretical modeling based on Néel and Brownian relaxation mechanisms was employed to predict SAR behavior as a function of particle size, magnetic anisotropy, and fluid viscosity. The results reveal that Dy doping enhances magnetic anisotropy, which modifies the relaxation dynamics and leads to a reduction in SAR. The model identifies the optimal nanoparticle size (~18–20 nm) and ferrofluid viscosity to maximize heating efficiency. This combined approach provides a comprehensive framework for designing and optimizing perovskite-based nanoparticles for magnetic hyperthermia applications. |
| format | Article |
| id | doaj-art-d35a788d643d4ccf973adb37a9c200e6 |
| institution | OA Journals |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-d35a788d643d4ccf973adb37a9c200e62025-08-20T01:49:24ZengMDPI AGNanomaterials2079-49912025-04-0115964210.3390/nano15090642Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent BehaviorMourad Smari0Monica Viorica Moisiuc1Mohammad Y. Al-Haik2Iordana Astefanoaei3Alexandru Stancu4Fedor Shelkovyi5Radel Gimaev6Julia Piashova7Vladimir Zverev8Yousef Haik9Center for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah P.O. Box 27272, United Arab EmiratesFaculty of Physics, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, RomaniaDepartment of Sustainable and Renewable Energy Engineering, University of Sharjah, Sharjah P.O. Box 27272, United Arab EmiratesFaculty of Physics, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, RomaniaFaculty of Physics, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, RomaniaFaculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gori, 119991 Moscow, RussiaFaculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000 Ljubljana, SloveniaFaculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gori, 119991 Moscow, RussiaFaculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gori, 119991 Moscow, RussiaDepartment of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, Sharjah P.O. Box 27272, United Arab EmiratesThe use of perovskite manganite nanoparticles in magnetic hyperthermia has attracted significant attention due to their tunable magnetic properties and high specific absorption rate (SAR). In this work, we present a combined experimental and theoretical investigation of the frequency- and amplitude-dependent magnetic heating behavior of La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> (LSMO) and Dy-doped La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> (DLSMO) nanoparticles. The nanoparticles were synthesized via the sol–gel method and characterized by XRD and SEM, while SAR values were experimentally evaluated under varying magnetic field strengths (60–120 Oe) and frequencies (150–300 kHz). In parallel, theoretical modeling based on Néel and Brownian relaxation mechanisms was employed to predict SAR behavior as a function of particle size, magnetic anisotropy, and fluid viscosity. The results reveal that Dy doping enhances magnetic anisotropy, which modifies the relaxation dynamics and leads to a reduction in SAR. The model identifies the optimal nanoparticle size (~18–20 nm) and ferrofluid viscosity to maximize heating efficiency. This combined approach provides a comprehensive framework for designing and optimizing perovskite-based nanoparticles for magnetic hyperthermia applications.https://www.mdpi.com/2079-4991/15/9/642magnetic hyperthermiaperovskite manganite nanoparticlesspecific absorption rate (SAR)ferrofluid viscositynanoparticle heating efficiency |
| spellingShingle | Mourad Smari Monica Viorica Moisiuc Mohammad Y. Al-Haik Iordana Astefanoaei Alexandru Stancu Fedor Shelkovyi Radel Gimaev Julia Piashova Vladimir Zverev Yousef Haik Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior Nanomaterials magnetic hyperthermia perovskite manganite nanoparticles specific absorption rate (SAR) ferrofluid viscosity nanoparticle heating efficiency |
| title | Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior |
| title_full | Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior |
| title_fullStr | Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior |
| title_full_unstemmed | Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior |
| title_short | Tunable Magnetic Heating in La<sub>0.51</sub>Sr<sub>0.49</sub>MnO<sub>3</sub> and La<sub>0.51</sub>Dy<sub>0.045</sub>Sr<sub>0.445</sub>MnO<sub>3</sub> Nanoparticles: Frequency- and Amplitude-Dependent Behavior |
| title_sort | tunable magnetic heating in la sub 0 51 sub sr sub 0 49 sub mno sub 3 sub and la sub 0 51 sub dy sub 0 045 sub sr sub 0 445 sub mno sub 3 sub nanoparticles frequency and amplitude dependent behavior |
| topic | magnetic hyperthermia perovskite manganite nanoparticles specific absorption rate (SAR) ferrofluid viscosity nanoparticle heating efficiency |
| url | https://www.mdpi.com/2079-4991/15/9/642 |
| work_keys_str_mv | AT mouradsmari tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT monicavioricamoisiuc tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT mohammadyalhaik tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT iordanaastefanoaei tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT alexandrustancu tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT fedorshelkovyi tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT radelgimaev tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT juliapiashova tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT vladimirzverev tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior AT yousefhaik tunablemagneticheatinginlasub051subsrsub049submnosub3subandlasub051subdysub0045subsrsub0445submnosub3subnanoparticlesfrequencyandamplitudedependentbehavior |