Results in Physics最新文献

{"title":"A comparative study on effects of magnesium substitution at Nd and Fe-sites on the structural, optical, magnetic, and dielectric properties of neodymium orthoferrite","authors":"Mansoureh Pourjafar,&nbsp;Davoud Sanavi Khoshnoud","doi":"10.1016/j.rinp.2025.108496","DOIUrl":"10.1016/j.rinp.2025.108496","url":null,"abstract":"<div><div>Tailoring optical, electrical and magnetic behaviour of orthoferrites is vital for their application in advanced devices. In this study comparatively investigated the effects of magnesium ion substitution on structural, optical, magnetic, and dielectric properties of Nd_1-xMg_xFeO₃ and NdFe_1-yMg_yO₃ (x, y = 0.0, 0.05, 0.10, 0.15, and 0.20). X-ray photoelectron spectroscopy analysis revealed that Mg doping at the Fe site induces a higher concentration of oxygen vacancies compared to that of Nd-site. Rietveld refinement and XRD patterns confirmed that the samples crystalized in an orthorhombic structure with space group <em>Pbnm</em>. The unit cell volume (<em>V</em>) decreases overall due to magnesium doping in the Nd and Fe-sites. The FE-SEM images revealed homogenous, spherical nanoparticles ranging in size from 70 nm to 108 nm, depending on the Mg concentration. The optical band gap energy (<em>E_g</em>) was investigated by diffuse reflectance spectroscopy analysis. While <em>E_g</em> decreases from 2.15 eV for the pure sample to 1.87 eV for the <em>y</em> = 0 sample, in Nd_1-xMg_xFeO₃ samples is found to decrease at first until <em>x</em> = 0.10 sample, and then increase monotonically with increasing Mg content. The nature of the magnetic hysteresis loops for Nd_1-xMg_xFeO₃ compounds show a soft ferromagnetic behavior. Notably, the remanent magnetization in the Nd_1-xMg_xFeO₃ samples was found to be more than five times higher than that of the NdFe_1-yMg_yO₃ compounds. By contrast, <em>H_c</em> in NdFe_1-yMg_yO₃ nanoparticles increases significantly from <em>y</em> &gt; 0.05 and reaches 1300 Oe for the sample with <em>y</em> = 0.2 while the <em>H_c</em> decreases slightly with Mg doping in Nd_1-xMg_xFeO₃ samples. A substantial increase in the dielectric constant was observed in all the Mg-substituted samples at room temperature, regardless of the substitution site. However, this increase was considerably more pronounced in the samples in which Mg was substituted at the Fe-site. Finally, the presence of an anomaly in the temperature dependence of the dielectric constant for the studied samples around the antiferromagnetic-paramagnetic transition implies the existence of magnetoelectric coupling in our compounds due to strong spin-phonon coupling.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108496"},"PeriodicalIF":4.6,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145364459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the thermoelectric performance of Sb1.85In0.15Te3 alloys by effective mass increase via in situ ZnTe formation and resultant Te-excess by Zn addition","authors":"Gwan Hyeong Lee ,&nbsp;Gyujin Chang ,&nbsp;Jaewoo Park ,&nbsp;Chanwoo Ju ,&nbsp;Yunjae Kim ,&nbsp;Seungwoo Ha ,&nbsp;Se Yun Kim ,&nbsp;Myoung Seok Kwon ,&nbsp;Sang-il Kim","doi":"10.1016/j.rinp.2025.108498","DOIUrl":"10.1016/j.rinp.2025.108498","url":null,"abstract":"<div><div>Sb₂Te₃-based alloys exhibit decent thermoelectric transport properties in mid-temperature range above 550 K, with In-doped Sb₂Te₃ compositions reported to exhibit the higher performance. Doping is known to enhance the thermoelectric efficiency at elevated temperatures by constraining bipolar conduction via bandgap enlargement. In this study, the thermoelectric properties of Sb_1.85In_0.15Te₃ polycrystalline alloys are enhanced by Zn addition, which provides an alternative approach. The <em>in situ</em> formation of ZnTe inclusions during the cooling of nominal Sb_1.85−xIn_0.15Zn<em>_x</em>Te₃ compositions (<em>x</em> = 0, 0.01, 0.02, 0.03, and 0.04) in conventional solid-state reaction induces an excess of Te, which suppresses the intrinsic Te vacancies in Sb_1.85In_0.15Te₃ and thus increases the density-of-state effective mass. Consequently, the power factor increases evenly in the measured temperature range of 300–650 K, reaching 1.17 mW/mK² at 600 K for <em>x</em> = 0.04, representing 19 % improvement over that of the pristine sample. Furthermore, the excess Te and ZnTe inclusions serve as zero- and three-dimensional phonon scattering centers, respectively, effectively reducing lattice thermal conductivity (<em>κ</em>_latt) by effectively scattering both high- and low-frequency phonons. At 300 K, <em>κ</em>_latt of the <em>x</em> = 0.04 sample is 15 % lower than that of the pristine sample, resulting in an enhanced thermoelectric figure of merit, <em>zT</em>, of 0.75 at 600 K, which is 25 % higher than that of pristine Sb_1.85In_0.15Te₃. Since the effective mass increase and lattice thermal conductivity reduction are independent of the known bandgap widening strategies of doping, further enhancement of the thermoelectric efficiency of Sb_1.85In_0.15Te₃ at elevated temperatures can be anticipated through further combined doping.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108498"},"PeriodicalIF":4.6,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145364458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Terahertz image encryption based on chiral metasurface","authors":"Shitong Song ,&nbsp;Qingyang Liu ,&nbsp;Linyun Luo ,&nbsp;Limei Qi ,&nbsp;Jun Yang ,&nbsp;Zihui Gong ,&nbsp;Zin Nandar Win","doi":"10.1016/j.rinp.2025.108485","DOIUrl":"10.1016/j.rinp.2025.108485","url":null,"abstract":"<div><div>Images, as prevalent carriers of information, are widely applied in daily life and production. With the development of information technology, concerns over information security have risen, leading to the emergence of image encryption techniques. Metasurfaces demonstrate exceptional electromagnetic wave manipulation capabilities, establishing their potential as encryption platforms for image security. In this work, a chiral metasurface that exhibits completely opposite absorption characteristics for circularly polarized waves in its original and mirror-image configurations is experimentally demonstrated. Then, both the multiple interference model and exceptional point are used for theoretical analysis of the chiral metasurface. Finally, the polarized-dependent metasurface encryption image is designed to achieve different terahertz images based on the chiral structures.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108485"},"PeriodicalIF":4.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145364460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning electronic and magnetic properties of off-center D− impurity in GaAs quantum dots with spin–orbit interactions and magnetic field","authors":"Anusha Kachu ,&nbsp;Aalu Boda ,&nbsp;Narasimha Raju Chebrolu","doi":"10.1016/j.rinp.2025.108484","DOIUrl":"10.1016/j.rinp.2025.108484","url":null,"abstract":"<div><div>Our investigation into the electronic, magnetic, and correlation properties of an off-center negatively charged donor <span><math><mrow><mfenced><mrow><msup><mrow><mi>D</mi></mrow><mo>-</mo></msup></mrow></mfenced></mrow></math></span> in a GaAs quantum dot with Gaussian confinement is a novel and intriguing area of research. Conducted under the influence of Rashba and Dresselhaus spin–orbit interactions and an external magnetic field, we have derived analytical expressions for ground-state energy, binding energy, dipole moment, and pair correlation function using the effective mass approximation and Ritz variational approach. The binding energy peaks when the impurity is centered and decreases with off-center displacement, potentially leading to an unbound state. Dresselhaus spin–orbit interaction enhances binding at the dot’s center, while Rashba spin–orbit interaction dominates with larger displacements, inducing charge asymmetry that impacts electronic and spintronic properties. Magnetic fields strengthen electron localization, potentially restoring binding in less favorable configurations. Impurity position and spin–orbit interactions significantly influence dipole moment and electron–electron correlation. Phase diagrams delineate parameter ranges for stable two-electron binding, offering novel insights into tunable donor-bound states for quantum device applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108484"},"PeriodicalIF":4.6,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-Markovianity: Necessary and sufficient criteria for composition in time and energy domains","authors":"H. Triviño ,&nbsp;F. Mesa","doi":"10.1016/j.rinp.2025.108489","DOIUrl":"10.1016/j.rinp.2025.108489","url":null,"abstract":"<div><div>Given an open quantum mechanical process, whether the decoherence followed by a physical system is non-Markovian (and to what extent) is of the utmost importance since it defines the predictions that can be made for the physical observables. Furthermore, non-local correlations in time are the quintessential effect of Non-Markovian dynamics. Since in quantum mechanics, time and energy are canonical conjugate variables, it is natural to expect that those correlations in time can also be observed in the energy domain. In this paper, we resort to the principle of composition or divisibility to observe memory effects in the Wigner propagation function in complex phase spaces. In this sense, we show that the sudden coupling of the system to the bath contributes to non-Markovian effects, and we show the constraints for experimental accessibility. Furthermore, we incorporate sufficient and necessary criteria in the energy domain to compose it in the time domain. Finally, we indicate that the results are applicable to radiative quenching, ionization of atoms, intramolecular relaxation, and photon bath coupling based on the Weiskopf model.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108489"},"PeriodicalIF":4.6,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and evaluation of phthalocyanine-functionalized triselenasumanene molecules as multifunctional hole transport materials in perovskite and donor materials in organic solar cells: A DFT study","authors":"Vahdat Rafee ,&nbsp;Khadijeh Didehban ,&nbsp;Narjes Ajdadi","doi":"10.1016/j.rinp.2025.108483","DOIUrl":"10.1016/j.rinp.2025.108483","url":null,"abstract":"<div><div>This study aims to design and introduce multifunctional organic molecules based on Triselenasumanene (TRSS) functionalized with one to three organic Phthalocyanine units (Tr-Ph1 to Tr-Ph3) for potential use as donors in organic solar cells (OSCs) and hole transport materials (HTMs) in both OSCs and perovskite solar cells (PSCs). Using DFT and TD-DFT methods with the B3LYP functional and 6-31G(d,p) basis set, the structures were optimized and analyzed.</div><div>The results showed that increasing the number of Phthalocyanine units significantly reduces the energy gap (from 4.29 eV for TRSS to 1.97 eV for Tr-Ph3), induces a strong red shift in maximum absorption wavelength, enhances absorption intensity (over threefold), increases dipole moment, decreases the first excitation energy (nearly half), doubles the light-harvesting efficiency (LHE), reduces binding energy, and nearly doubles the λ_e/λ_h ratio. These findings support the suitability of the designed molecules as donors in OSCs and HTMs in both OSCs and PSCs.</div><div>Osc simulations with acceptors such as ITIC, ITIC-Th, Y6, L8-BO, and BTP-eC9 showed that L8-BO:Tr-Ph1 achieves the highest PCE of 21.08%. Moreover, HOMO–LUMO alignment with MAPbI₃ and FAPbI₃ confirms their potential as HTMs. The high efficiency, synthetic accessibility, non-toxicity, multifunctionality, and eco-friendly nature of these molecules offer a promising path for next-generation OSCs and PSCs.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108483"},"PeriodicalIF":4.6,"publicationDate":"2025-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Li(Li1/3Mn2/3O2) content on structural and electrochemical properties in xLi(Li1/3Mn2/3O2)-(1-x)LiNi0.975V0.025O2 cathode materials for lithium-ion batteries","authors":"Belete Tilahun Enyew ,&nbsp;Zihan Yan ,&nbsp;Jiexi Wang ,&nbsp;Paulos Taddesse","doi":"10.1016/j.rinp.2025.108482","DOIUrl":"10.1016/j.rinp.2025.108482","url":null,"abstract":"<div><div>This study investigated the structural and electrochemical properties of a series of manganese- and lithium-rich xLi(Li_1/3Mn_2/3O₂)-(1-x)LiNi_0.975V_0.025O₂ (where x = 0.0, 0.3, 0.4, 0.45, 0.55, and 0.65) cathode materials. These materials were synthesized using a two-step solid-state reaction. The crystalline structure and layered nature of the synthesized materials were confirmed through X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. Scanning electron microscopy (SEM) analysis revealed grain sizes in the range of 0.44 to 0.56 μm. The distribution of elements was examined using energy-dispersive X-ray spectroscopy (EDS) and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) mapping. These analyses demonstrated a uniform distribution of Ni and V in the LiNi₀.₉₇₅V₀.₀₂₅O₂ (LNV) sample, and a uniform distribution of Ni, Mn, and V in the xLi(Li_1/3Mn_2/3O₂)-(1-x)LiNi_0.975V_0.025O₂ (LMNV-x) samples. X-ray photoelectron spectroscopy (XPS) was employed to investigate the oxidation states of the constituent elements in all samples. An analysis of structural parameters revealed a clear dependence on the Li(Li_1/3Mn_2/3O₂) content within the LMNV-x series. The incorporation of Li(Li_1/3Mn_2/3O₂) improved the electrochemical performance of the LMNV materials. The LMNV-0.55 composition exhibited particularly outstanding electrochemical performance, delivering a discharge capacity of 198.8 mAh/g and retaining 90.4 % of its initial capacity after 50 cycles at a current rate of 0.1C within a voltage window of 2.8 to 4.8 V. Furthermore, LMNV-0.55 achieved the highest initial coulombic efficiency (92 %) and demonstrated superior cycling stability. Electrochemical impedance spectroscopy (EIS) corroborated these findings, identifying LMNV-0.55 as the best-performing cathode material among the synthesized samples. The electrochemical investigation demonstrated the potential of the xLi(Li_1/3Mn_2/3O₂)-(1-x)LiNi_0.975V_0.025O₂ materials as a promising approach for developing high-performance lithium-ion batteries.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108482"},"PeriodicalIF":4.6,"publicationDate":"2025-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated wide-field photothermal reflectance and transmittance microscopy for the detection of individual nanoparticles","authors":"Jung-Dae Kim ,&nbsp;Ilkyu Han ,&nbsp;Do Hyeon Kim ,&nbsp;Dongmok Kim ,&nbsp;Se-Yeon Heo ,&nbsp;Chan Bae Jeong ,&nbsp;Jaeuk U. Kim ,&nbsp;Young Min Song ,&nbsp;Dong Uk Kim ,&nbsp;Ki Soo Chang","doi":"10.1016/j.rinp.2025.108479","DOIUrl":"10.1016/j.rinp.2025.108479","url":null,"abstract":"<div><div>Nanoparticles are extensively utilized in biomedicine and plasmonic sensing; therefore, precise measurement techniques for individual NPs are required. Photothermal microscopy offers high sensitivity, label-free specificity, and rapid imaging for nanoparticle detection. Among photothermal microscopy modalities, wide-field photothermal microscopy facilitates high-throughput analysis with simplified alignment but suffers from reduced signal-to-noise ratio due to increased shot noise. This study presents a compact wide-field photothermal microscopy system capable of performing both photothermal reflectance and transmittance imaging. The system integrates two CCD cameras, two probe beams, and a pump laser into a conventional microscope setup, allowing the alignment-free detection of individual nanoparticles. Photothermal transmittance imaging improves the photothermal contrast through enhanced forward scattering and interference. Comparative experiments demonstrated that photothermal transmittance achieves a significantly higher signal-to-noise ratio than photothermal reflectance, particularly when the surrounding medium is optically transparent. Optical simulations using the finite-difference time-domain method support the observed enhancement, which is attributed to strong modulation of the transmitted probe field. The developed platform enables robust, high-throughput characterization of individual nanoparticles and provides practical advantages for nanoparticle analysis under varying sample conditions.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108479"},"PeriodicalIF":4.6,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pseudo-timelike loops in signature changing semi-Riemannian manifolds with a transverse radical","authors":"N.E. Rieger ,&nbsp;W. Hasse","doi":"10.1016/j.rinp.2025.108478","DOIUrl":"10.1016/j.rinp.2025.108478","url":null,"abstract":"<div><div>In 1983, Hartle and Hawking proposed the no-boundary proposal, suggesting that the universe has no beginning in the sense of a spacetime singularity or boundary. Nevertheless, there is an origin of time. Mathematically, this involves signature-type changing manifolds in which a Riemannian region smoothly transitions to a Lorentzian region across the hypersurface <span><math><mi>H</mi></math></span> where time begins.</div><div>We develop a coherent framework for signature changing manifolds with a degenerate yet smooth metric. Established Lorentzian tools and results are then adapted to this setting, and new definitions are introduced that carry unforeseen causal implications. A noteworthy consequence is the presence of locally time-reversing loops through every point on the hypersurface. Imposing global hyperbolicity on the Lorentzian region, we prove that for every point <span><math><mrow><mi>p</mi><mo>∈</mo><mi>M</mi></mrow></math></span> there exists a pseudo-timelike loop self-intersecting at <span><math><mi>p</mi></math></span>. Equivalently, <span><math><mi>M</mi></math></span> always admits a closed pseudo-timelike path around which the time direction reverses, preventing any consistent distinction between future- and past-directed vectors. To an observer near <span><math><mi>H</mi></math></span>, such loops may appear as the creation of a particle–antiparticle pair at two distinct points.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108478"},"PeriodicalIF":4.6,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, magnetic, dielectric, and photocatalytic properties of ZnO/MgFe2O4 nanocomposite for low-frequency electronic and sustainable water treatment applications","authors":"Tayyaba Ahmed ,&nbsp;Saima Perveen ,&nbsp;Manzar Sohail ,&nbsp;Waheed Miran ,&nbsp;Waqar Azeem ,&nbsp;Fahad Azad","doi":"10.1016/j.rinp.2025.108480","DOIUrl":"10.1016/j.rinp.2025.108480","url":null,"abstract":"<div><div>Multifunctional nanocomposite materials have gained a lot of importance for addressing emerging issues, facing a diverse range of science and technological fields. Herein, we report a simple method for the synthesis of ZnO/MgFe₂O₄ nanocomposite (NC) and a systematic characterization of the product in this study. A structurally robust hybrid system consisting of ZnO and MgFe₂O₄ leads to interfacial synergy between the individual components, leading to enhanced overall performance from the blended material. An in-depth analysis was conducted to study the synthesized nanocomposite's structural, morphological, magnetic, dielectric, and photoelectric properties. The impedance analysis indicates that the electrical transport in ZnO/MgFe₂O₄ NC is primarily dominated by MgFe₂O₄, with ZnO having a negligible impact on charge conduction, resulting in comparable resistive behavior. The photocatalytic activity of the ZnO/MgFe₂O₄ was evaluated using methylene blue (MB) as the model pollutant under natural sunlight. The results showed a removal efficiency of 99.16%, which was significantly higher than pure MgFe₂O₄ and ZnO nanoparticles. The enhanced photocatalytic activity was correlated with higher photocurrent generation, better charge isolation ability, and lower charge transfer resistance of the NC. This shows the remarkable potential of ZnO/MgFe₂O₄ NC photocatalyst for sustainable degradation of dyes from water.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"78 ","pages":"Article 108480"},"PeriodicalIF":4.6,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}