Article
Engineering, Electrical & Electronic
Fengfeng Luo, Jiang Wei, Qiuxiang Liu, Jiawei Wang
Summary: The hydrothermal method was used to prepare single-phase Mn-doped Cu2O powder samples, in which Mn ions were successfully incorporated into the Cu2O lattice without changing the crystal structure, resulting in room temperature ferromagnetism that was enhanced with Mn doping. The samples exhibited mixing magnetic properties, with the enhancement of magnetization attributed to the increase in ferromagnetic coupling pairs.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Nuengruethai Ekthammathat, Anukorn Phuruangrat, Thirawit Phonkhokkong, Wachiraporn Maisang, Patcharanan Junploy, Arrak Klinbumrung, Somchai Thongtem, Titipun Thongtem
Summary: Mn-doped ZnO samples were successfully synthesized using sonochemical method, with XRD showing peak shifts due to Mn2+ incorporation. SEM and TEM observations revealed morphological changes in Zn1-xMnxO at different doping concentrations. The highest saturation magnetization was observed in 3 mol% Mn-doped ZnO, while 5 mol% Mn-doped ZnO exhibited suppressed ferromagnetic properties due to Mn cluster formation.
Article
Materials Science, Ceramics
Seung Hyun Jin, Hae Won Lee, Na Won Kim, Byung-Woo Lee, Gil-Geun Lee, Youn-Woo Hong, Woo Hyun Nam, Young Soo Lim
Summary: This study demonstrates the sonochemically activated solid-state synthesis of BaTiO3 powders, which accelerates the phase conversion process and can replace traditional ball-mill mixing methods.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Nasir Ali, Budhi Singh, A. R. Vijaya, Surender Lal, C. S. Yadav, Kartick Tarafder, Subhasis Ghosh
Summary: The study demonstrates that zinc vacancies enhance ferromagnetic ordering while oxygen vacancies suppress it in Mn-doped ZnO. Experimental results confirm the room-temperature ferromagnetism in Mn-doped ZnO. Spectroscopic and magnetic measurements reveal the presence of V-Zn and Mn in the films.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
S. S. Ghosh, A. Sil
Summary: 5 and 7.5 at% Mn doped ZnO samples were prepared by microwave treatment following thermal curing. The XRD phase analysis reveals the presence of Mn in different forms and successful bonding with ZnO to form new compounds. Microwave treatment induces structural evolution of the samples, reduces the photoluminescence peak intensity, and increases the saturation magnetisation.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Zulfiqar, Muhammad Zubair, Aurangzeb Khan, Tang Hua, Nasir Ilyas, Simbarashe Fashu, Amir Muhammad Afzal, Main Akif Safeen, Rajwali Khan
Summary: The study found that the quantity of oxygen vacancies significantly influences the structure and properties of co-doped ZnO nanoparticles, increasing with dopant concentration. Furthermore, there is a strong correlation between oxygen vacancies and the enhanced dielectric and magnetization responses of Co (fixed) and Mn (varied) co-doped ZnO nanoparticles, making them suitable for spintronics and optoelectronic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Mohamad Hasan Aleinawi, Ameen Uddin Ammar, Merve Buldu-Akturk, Nur Selin Turhan, Shankari Nadupalli, Emre Erdem
Summary: Transition-metal-doped ZnO is a potential dilute magnetic semiconductor for spintronic applications. This report presents the synthesis of manganese-doped ZnO using a microwave-assisted hydrolysis technique, and investigates the defect structure via electron paramagnetic resonance and photoluminescence techniques, revealing that Mn2+ dominates the intrinsic defect species in ZnO.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Aradhana Kumari, Ashutosh Kumar, Riya Dawn, Joseph B. Franklin, Raviteja Vinjamuri, Santosh Kr Sahoo, Uttam Kr Goutam, Virendra Kr Verma, Ramcharan Meena, Asokan Kandasami, Somnath Mahapatra, Kundan Kumar, Akhilananda Kumar, Vijay Raj Singh
Summary: This study investigated the crystal, magnetic, and electronic structures of Cr-doped VO2 thin films, revealing characteristics such as preferential growth along the a-axis, single-phase monoclinic and triclinic structures, and ferromagnetism in VCO films. X-ray photoelectron spectroscopy indicated the absence of Cr metal clusters, while resonant photoemission spectra showed strong hybridization between Cr 3d states and V5+ defect states in the films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Letter
Chemistry, Multidisciplinary
Jia-Min Lai, Muhammad Umair Farooq, Yu-Jia Sun, Ping-Heng Tan, Jun Zhang
Summary: The multiphonon process is crucial for understanding the electron-phonon coupling in solids, which affects their optical and transport properties. This study investigates the characteristics of high-order Raman scattering and hot luminescence in Mn-doped ZnO nanowires to shed light on the multiphonon-involved decay process of excited states, providing insights for further studies on the statistical characteristics of excited state decay.
Article
Physics, Condensed Matter
G. Soniya Pauline, S. Kaleemulla
Summary: This study focuses on the synthesis of titanium doped zinc oxide nanoparticles using solid state reaction and vacuum annealing. The effects of titanium on the physical, optical, surface, spectroscopic, elemental, and electrical properties of the nanoparticles were investigated using various characterization techniques.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Applied
Chih-Ming Lin, Yu-Chin Tseng, Yi-Jia Tsai, Yu-Sheng Lin, Sheng-Rui Jian, Yu-Chun Chuang, Jenh-Yih Juang
Summary: In situ angle-dispersive X-ray diffraction study revealed that transition metal doping can significantly reduce the onset pressure of ZnO's pressure-driven phase transition from fourfold to sixfold structure. The transition path is influenced by the specific transition metal element. The doping-induced lattice distortion and the amount of 3d electrons carried by the transition metal atom both play important roles in the mechanism of the phase transition.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
L. Chouhan, G. Bouzerar, S. K. Srivastavat
Summary: The study investigated the crystal structure, micro-structure, and magnetic properties of Li-doped ZnO compounds, revealing that Li-doping induces room temperature ferromagnetism with ultra-soft coercivity. XRD patterns and SEM images confirmed the high crystallinity and uniform morphology of the doped compounds.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Rimpi Chakravarty, Ujjal Das, R. K. Parida, B. N. Parida
Summary: This research work aims to investigate the impact of Ca on the structural, electrical, and magnetic behavior of BFN, and explore its suitability for multifunctional applications. Through various analysis techniques such as X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy, it is found that the synthesized complex perovskite has a monoclinic crystal structure, dense surface morphology, and exhibits semiconducting and capacitive properties, as well as ferromagnetic behavior at room temperature. The findings suggest that the synthesized complex perovskite can be used for fabricating tunable microwave devices, energy storage devices, magnetic storage devices, etc.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Khusboo Agrawal, Banarji Behera, S. C. Sahoo, S. K. Rout, Ashok Kumar, Piyush R. Das
Summary: The GaFeO3 and doped samples were synthesized by ceramic method and investigated for their structural, microstructural, electrical, and multiferroic properties. The doped samples showed significantly improved dielectric and ferroelectric properties, with the presence of a non-Debye type of relaxation.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Physics, Multidisciplinary
S. Balamurali, S. Saravanakumar, R. Chandramohan, P. N. Magudeswaran
Summary: In this research, Mn-doped ZnO thin films with different concentrations were grown on a glass substrate using the SILAR technique. The effects of dopant materials on the structural, morphological, optical, and magnetic properties of the films were studied. The results showed that dopants changed the surface morphology and optical properties of the films, with higher Mn concentrations exhibiting ferromagnetism. This transparent DMS material has potential applications in opto-electronics and spintronics.
BRAZILIAN JOURNAL OF PHYSICS
(2021)
