Article
Chemistry, Physical
Anu, Depanshu Varshney, Kamlesh Yadav, Jai Prakash, Harikesh Meena, Gautam Singh
Summary: In this study, ferroelectric layered perovskite Bi4Ti3O12 (BT4) nanoparticles were synthesized and their temperature-dependent dielectric and electro-optical properties in 4-pentyl-4'-cyanobiphenyl (5CB) nematic liquid crystal were investigated. The BT4 nanoparticles were uniformly dispersed in the 5CB matrix without agglomeration. The optical memory of the 5CB-BT4 composite was decreased compared to 5CB, and the dielectric parameters were estimated using dielectric spectroscopy. The anisotropy of the dielectric properties decreased in the 5CB-BT4 composite, and the DC conductivity increased four times compared to 5CB. This study demonstrates the tunability of the dielectric and optical memory features of the 5CB matrix by doping BT4 nanoparticles.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Nanoscience & Nanotechnology
K. R. Bhagya, K. R. Jyothi, Vinayakprasanna N. Hegde, B. Daruka Prasad, H. Nagabhushana, S. C. Sharma, N. M. Nagabhushana
Summary: Praseodymium-activated yttrium molybdenum oxide nanophosphors were synthesized using a low-temperature solution combustion method with aloe vera gel as a surfactant. The synthesized nanophosphors exhibited structural, morphological, optical, and electrical properties suitable for multifunctional applications. The study suggests potential uses for these nanophosphors in various fields.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Materials Science, Ceramics
Hongrui Jia, Jiahao Mi, Zhen Li, Linghang Wang
Summary: In this study, Sm-doped Pb(Mg1/3Nb2/3)O-3-Pb(Zn1/3Nb2/3)-PbTiO3 ternary ferroelectric ceramics near MPB were successfully manufactured and investigated. The results showed that Sm doping can achieve a high piezoelectric coefficient and a high Curie temperature simultaneously, and the room temperature dielectric constant was greatly improved. These Sm-doped ceramics may have potential applications in high-performance piezoelectric devices.
CERAMICS INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Oleksii V. Laguta, Igor M. Razdobreev
Summary: Recent studies have shown that orange-red luminescence in Bismuth-doped silica glasses may originate from electron systems other than Bi2+ ions, challenging the widely accepted theory. Further research is needed to explore the nature of this complex behavior and confirm the proposed new interpretation of the luminescence mechanism.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
Bhagyashree Mohanty, S. Bhattacharjee, N. C. Nayak, R. K. Parida, B. N. Parida
Summary: Investigation of a composite material with magnetostriction and piezoelectric behavior shows promising characteristics for practical device applications, with moderate Curie temperature, high resistivity, and ferromagnetic properties.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Ceramics
Tio Putra Wendari, Zulhadjri, Mukhniyal Ikhram, Emriadi
Summary: This study reports the synthesis of Sr/Nb-modified Bi4Ti3O12 Aurivillius phase using the molten-salt method, and investigates the effects of cation substitution on the properties of the materials. The results show that the phase structure and electrical properties of the materials change with the increase of cation substitution.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Yujie Zhang, Mingze Sun, Xiaoxiao Zhou, Shaochen Hu, Xiyue Zhang, Huili Zhang, Huaiyan Li, Jigong Hao, Wei Li
Summary: This study successfully integrated photoluminescence, ferroelectricity, and piezoelectricity in Pr3+-doped (Ba, Ca)(Ti, Sn)O-3 ferroelectric ceramics, showing excellent piezoelectric and photoluminescence properties. The mechanism of luminescence modulation and polarization processing was discussed in the research.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Bandana Panda, Pragyan Paramita Sahoo, Swaroop Satya Sumanta Das, Ram Naresh Prasad Choudhary
Summary: Pure bismuth titanate (Bi4Ti3O12) and Selenium (Se) substituted bismuth titanate (Bi4Ti2.8Se0.2O12) samples were prepared using a mixed-oxide reaction method. Partial substitution of Se at Ti sites induces changes in the structural properties. The substituted sample exhibits ferroelectricity and shows enhanced dielectric properties at 1 MHz frequency. This material can serve as a starting point for the development of microwave devices.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
Mohamed Aissa, Moneim Zannen, Hassan A. H. Alzahrani, Jamal Belhadi, Youness Hadouch, Daoud Mezzane, Mimoun El Marssi, Mustapha Majdoub, Abdelilah Lahmar
Summary: Undoped and RE3+ (RE: Pr; Nd; Dy; Ho; Tm) doped 0.925Na(0.5)Bi(0.5)TiO(3)-0.075K(0.5)Na(0.5)NbO(3) ceramics were successfully synthesized using the solid-state synthesis method. The doped samples showed more diffused phase transition curves and higher dielectric constants. The ferroelectric hysteresis loops demonstrated a significant increase in polarization and electric breakdown strengths for the doped samples. Optical studies revealed the conversion of near-infrared light to visible light and the generation of multichromatic spectral emissions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Chuang Wang, Ying Li, Shuanglong Chen, Yanyan Li, Qingyi Lv, Bohuai Shao, Ge Zhu, Lei Zhao
Summary: A novel red emission pyrophosphate phosphor Rb2Ba3(P2O7)(2):Eu3+ was successfully synthesized using a nonlinear optical material-inspired methodology, showing high quantum efficiency, color purity, and thermal stability. This phosphor exhibits excellent luminescence properties and stability against external factors, making it a potential candidate for multifunctional optical applications.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Electrical & Electronic
Wei Ou, Yang Mei, Daisuke Iida, Huan Xu, Minchao Xie, Yiwei Wang, Lei-Ying Ying, Bao-Ping Zhang, Kazuhiro Ohkawa
Summary: In this study, InGaN-based orange-red RCLEDs were successfully fabricated using a unique structure and technique, achieving low optical loss in the resonant cavity. The performance of the devices was validated through far-field emission observation and simulation, demonstrating the consistency between performance and design. This research is of significance for the development of displays and communication systems.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jing Yan, Jun Ouyang, Hongbo Cheng, Hanfei Zhu, Chao Liu
Summary: In this study, Bi4Ti3O12-CaBi4Ti4O15 intergrowth ferroelectric films integrated on Si were shown to possess an ultrahigh recyclable energy density and good energy efficiency, achieved through the combination of high spontaneous polarization and a polycrystalline nanograin microstructure. The limited grain growth and buffer layer effect exhibited by this structure contributed to remarkable fatigue-resistance and excellent charge-retaining ability.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Condensed Matter
K. R. Nishkala, Rajat Radhakrishna Rao, Srinivas Mutalik, M. S. Murari, Mamatha D. Daivajna
Summary: Barium hexaferrite, Ba(1-x)La(x)Fe12O19 (x=0, 0.1, 0.15, 0.20), was synthesized through ball milling and heat treatment. The X-ray diffraction patterns confirmed the formation of a single-phase magnetoplumbite structure in all samples. The morphological analysis revealed the formation of hexagonal plate-like grains with varying grain sizes, and La doping resulted in a decrease in average grain size. EDS analysis confirmed the expected elemental composition within the experimental error. Density measurements indicated a decrease in porosity up to La content x = 0.15, followed by a slight increase for x = 0.20.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Crystallography
Huiting Zhang, Zhonghua Zhu, Shengdi Ta, Ninghan Zeng, Limin Wu, Wenxia Wu, Peng Zhang, Shoulei Xu, Bernard Albert Goodman, Wen Deng
Summary: High-quality single crystals with empirical composition Y2.96Sm0.04Ga5O12 (YGG: Sm3+) were prepared by the optical floating zone method for the first time and compared with Y2.96Sm0.04Ga5O12 (YAG: Sm3+) single crystals. Both crystals showed Sm3+ entering cubic-phase structure according to XRD. Optical absorption spectra revealed peaks from Sm3+ in the 250 nm to 550 nm range, and photoluminescence excitation (PLE) spectra detected strong excitation peaks at 407 nm and 468 nm. A bright emission peak at 611 nm was observed in the photoluminescence (PL) spectra under excitations at both 407 nm and 468 nm, with the YGG: Sm3+ crystal exhibiting higher intensity and color purity than the YAG: Sm3+ crystal. The fluorescence lifetime of YGG: Sm3+ crystal was also longer.
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, Ceramics
Santhosh Kumar Thatikonda, Dayananda Goswami, Pamu Dobbidi
CERAMICS INTERNATIONAL
(2014)
Article
Materials Science, Multidisciplinary
Wenhua Huang, Muhammad Ismail, Aize Hao, Shuai He, Santhosh Kumar Thatikonda, Xingru Du, Ni Qin, Dinghua Bao
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2018)
Article
Materials Science, Ceramics
Wenhua Huang, Xingru Du, Santhosh Kumar Thatikonda, Ni Qin, Chuangye Yao, Aize Hao, Dinghua Bao
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Ceramics
Wenhua Huang, Santhosh Kumar Thatikonda, Yifu Ke, Xingru Du, Ni Qin, Aize Hao, Dinghua Bao
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Multidisciplinary
Chuangye Yao, Wei Hu, Muhammad Ismail, Santhosh Kumar Thatikonda, Aize Hao, Shuai He, Ni Qin, Wenhua Huang, Dinghua Bao
CURRENT APPLIED PHYSICS
(2019)
Article
Materials Science, Ceramics
Santhosh Kumar Thatikonda, Wenhua Huang, Xingru Du, Chuangye Yao, Yifu Ke, Jiang Wu, Ni Qin, Dinghua Bao
CERAMICS INTERNATIONAL
(2019)
Article
Chemistry, Physical
Chuangye Yao, Jiacheng Li, Santhosh Kumar Thatikonda, Yifu Ke, Ni Qin, Dinghua Bao
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Yifu Ke, Wenhua Huang, Santhosh Kumar Thatikonda, Ruqi Chen, Chuangye Yao, Ni Qin, Dinghua Bao
CURRENT APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Santhosh Kumar Thatikonda, Wenhua Huang, Xingru Du, Chuangye Yao, Yifu Ke, Jiang Wu, Ni Qin, Dinghua Bao
Summary: The study successfully induced an antiferroelectric - ferroelectric phase transition in PSZO thin films through Ti doping, confirming the phase transition with various experimental techniques, and observing ferroelectric behavior with high dielectric constant and large dielectric tunability. Additionally, Ti doping altered the Curie temperature of the material and enhanced the order of dielectric diffuseness.
CURRENT APPLIED PHYSICS
(2021)
Article
Physics, Condensed Matter
Mahendra Singh Rathore, Arun Vinod, Rambabu Angalakurthi, A. P. Pathak, Santhosh Kumar Thatikonda, Srinivasa Rao Nelamarri
Summary: The role of oxygen pressure on the structural, optical, and photoluminescence properties of GeO2 thin films grown by pulsed laser deposition was investigated. Optimal oxygen pressure of 200mTorr was found for high-quality crystalline GeO2 thin film growth, showing potential for optical applications. The study demonstrated changes in optical transmittance, optical bandgap, and photoluminescence intensity with varying oxygen pressure levels.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Physics, Applied
Jiacheng Li, Chuangye Yao, Yifu Ke, Wenhua Huang, Santhosh Kumar Thatikonda, Ni Qin, Dinghua Bao
Summary: In this study, spinel ferrite NiFe2O4 films were prepared using pulsed laser deposition, and Pt/NiFe2O4/Pt devices with the coexistence of unipolar and bipolar resistive switching were fabricated. The devices exhibited stable and nonvolatile resistive switching properties under different modes. Analysis showed that the carrier transport mechanisms differed significantly between the two modes. A physical model combining oxygen ion migration and electric field distribution was proposed to explain the coexistence of these distinct mechanisms in the RRAM device.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Chuangye Yao, Muhammad Ismail, Aize Hao, Santhosh Kumar Thatikonda, Wenhua Huang, Ni Qin, Dinghua Bao
Article
Materials Science, Multidisciplinary
Mahendra Singh Rathore, Arun Vinod, Rambabu Angalakurthi, A. P. Pathak, Fouran Singh, Santhosh Kumar Thatikonda, Srinivasa Rao Nelamarri
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2017)
