Moustafa Adel Abdelaziz Elsayed Darwish
@tdb2.tanta.edu.eg
Physics Department/Faculty of Science
Physics Department, Faculty of Science, Tanta University, Al-Geish st., Tanta 31527, Egypt
RESEARCH, TEACHING, or OTHER INTERESTS
Multidisciplinary, Materials Science, Physics and Astronomy, Engineering
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Chang-Hao Wang, Zhong-Qi Shi, Wen-Feng Liu, Moustafa Adel Darwish, Tao Zhou, Ya-Wei Chen, Qi-Xin Liang, Mei-Rong Zhang, and Di Zhou
Elsevier BV
Walaa Abd-Elaziem, Moustafa A. Darwish, Atef Hamada, and Walid M. Daoush
Elsevier BV
Walaa Abd-Elaziem, Atef Hamada, Tarek Allam, Moustafa M. Mohammed, Mohammad Abd-El Hamid, Sally Samah, Doaa Wasfy, Moustafa A. Darwish, Y Omayma Abd Elguad El-Kady, and Sally Elkatatny
Elsevier BV
Marwa M. Hussein, Samia A. Saafan, Hatem F. Abosheiasha, Di Zhou, Daria I. Tishkevich, Nikita V. Abmiotka, Ekaterina L. Trukhanova, Alex V. Trukhanov, Sergei V. Trukhanov, M. Khalid Hossain,et al.
Elsevier BV
Moustafa A. Darwish, Marwa M. Hussein, Samia A. Saafan, H.F. Abosheiasha, Walaa Abd-Elaziem, Denis S. Klygach, Sergei V. Trukhanov, Tatiana I. Zubar, and Alex V. Trukhanov
Elsevier BV
Mohamed M. Salem, Moustafa A. Darwish, Aseel M. Altarawneh, Yamen A. Alibwaini, Ryad Ghazy, Osama M. Hemeda, Di Zhou, Ekaterina L. Trukhanova, Alex V. Trukhanov, Sergei V. Trukhanov,et al.
Royal Society of Chemistry (RSC)
This work examined the influence of zirconium concentration on barium titanate (BZT) BaZrxTi1−xO3, with (x = 0, 0.15, 0.50, 0.75, and 1), produced by the tartrate precursor technique.
Xiao Li, Haowei Zhou, Jinlin Zhang, Xinyue Zhang, Man Li, Jieyan Zhang, Moustafa Adel Darwish, Tao Zhou, Shi-Kuan Sun, Lei Xie,et al.
Royal Society of Chemistry (RSC)
Owing to their unique semi-hollow cavity structure, shell-like carbon superstructures hold excellent microwave absorption capability, in which the reflection loss can reach −49.14 dB and the effective absorption bandwidth can reach 8.24 GHz.
Moustafa A. Darwish, Marwa M. Hussein, Maha K. Omar, Walaa Abd-Elaziem, Yuan Yao, Denis S. Klygach, M.V. Silibin, Sergei V. Trukhanov, Nikita V. Abmiotka, Daria I. Tishkevich,et al.
Elsevier BV
Hesham M. H. Zakaly, H. Hashim, Shams A. M. Issa, Moustafa A. Darwish, Fatma M. Obiedallah, M. S. I. Koubisy, and H. A. Saudi
Royal Society of Chemistry (RSC)
This study delves into the investigation of optical and gamma radiation shielding properties of glasses formulated with varying concentrations of By-pass combined with Na2O, Fe2O3, Bi2O3, and P2O5.
Walaa Abd-Elaziem, Mahmoud Khedr, Ammar.H. Elsheikh, Jingku Liu, Yuxin Zeng, Tamer A. Sebae, Marwa A. Abd El-Baky, Moustafa A. Darwish, Walid M. Daoush, and Xiaochun Li
Elsevier BV
Moustafa A. Darwish, Marwa M. Hussein, Samia A. Saafan, Walaa Abd-Elaziem, Di Zhou, Maksim V. Silibin, Sergei V. Trukhanov, Nikita V. Abmiotka, M.I. Sayyed, Daria I. Tishkevich,et al.
Elsevier BV
Marwa M. Hussein, Samia A. Saafan, H.F. Abosheiasha, Anwer S. Abd El-Hameed, Di Zhou, M.M. Salem, and Moustafa A. Darwish
Elsevier BV
Marwa M. Hussein, Samia A. Saafan, H.F. Abosheiasha, Di Zhou, M.V. Silibin, S.V. Trukhanov, A.V. Trukhanov, E.L. Trukhanova, K.A. Astapovich, Hesham M.H. Zakaly,et al.
Elsevier BV
Wei Wang, Muhammad Shehbaz, Xin Wang, Chao Du, Diming Xu, Zhong-Qi Shi, Moustafa Adel Darwish, Hong-Song Qiu, Biao-Bing Jin, Tao Zhou,et al.
American Chemical Society (ACS)
In developing low-temperature cofired ceramic (LTCC) technology for high-density packaging or advanced packaged electronics, matching the coefficient of thermal expansion (CTE) among the packaged components is a critical challenge to improve reliability. The CTEs of solders and organic laminates are usually larger than 16.0 ppm of °C1-, while most low-permittivity (εr) dielectric ceramics have CTEs of less than 10.0 ppm °C1-. Therefore, a good CTE match between organic laminates and dielectric ceramics is required for further LTCC applications. In this paper, we propose a high-CTE BaSO4-BaF2 LTCC as a potential solution for high-reliability packaged electronics. The BaSO4-BaF2 ceramics have the advantages of a wide low-temperature sintering range (650-850 °C), low loss, temperature stability, and Ag compatibility, ensuring excellent performance in LTCC technology. The 95 wt %BaSO4-5 wt %BaF2 ceramic has a εr of 9.1, a Q × f of 40,100 GHz @11.03 GHz (Q = 1/tan δ), a temperature coefficient of the resonant frequency of -11.2 ppm °C1-, a CTE of +21.8 ppm °C1-, and a thermal conductivity of 1.3 W mK-1 when sintered at 750 °C. Furthermore, a dielectric resonant antenna using BaSO4-BaF2 ceramics, a typically packaged component of LTCC and laminate, was designed and used to verify the excellent performance by a gain of 6.0 dBi at a central frequency of 8.97 GHz and a high radiation efficiency of 90% over a bandwidth of 760 MHz. Good match and low thermal stress were found in the packaged components of BaSO4-BaF2 ceramics, organic laminates, and Sn-based solders by finite element analysis, proving the potential of this LTCC for high-reliability packaged electronics.
Marwa M. Hussein, Samia A. Saafan, H. F. Abosheiasha, Amira A. Kamal, Abd El-razek Mahmoud, Di Zhou, Sergei V. Trukhanov, Tatiana I. Zubar, Alex V. Trukhanov, and Moustafa A. Darwish
Royal Society of Chemistry (RSC)
In this study, nanoparticles of Ba1−xSrxTiO3 (where x = 0.0, 0.1, 0.2, 0.3, and 0.4) have been prepared using a chemical method.
M.M. Salem, El-Refaie Kenawy, Hesham M.H. Zakaly, Antoaneta Ene, Mohamed M. Azaam, Tarek B. Edries, Di Zhou, Marwa M. Hussein, Anwer S. Abd El-Hameed, Islam M. Nabil,et al.
Elsevier BV
Marwa M. Hussein, Samia A. Saafan, H. F. Abosheiasha, Di Zhou, D. S. Klygach, M. G. Vakhitov, S. V. Trukhanov, A. V. Trukhanov, T. I. Zubar, K. A. Astapovich,et al.
Royal Society of Chemistry (RSC)
Nanosized spinel ferrites Co1−xNixFe2O4 (where x = 0.0–1.0) or CNFO have been produced using a chemical method.
Enas H. El-Ghazzawy, Hesham M.H. Zakaly, Albandari W. Alrowaily, Samia A. Saafan, Antoaneta Ene, Nagat M. Abo-aita, Moustafa A. Darwish, Di Zhou, and Ahmed S. Atlam
Elsevier BV
M. M. Salem, K. A. Darwish, O. M. Hemeda, M. I. Abdel Ati, Anwer S. Abd El-Hameed, Di Zhou, and Moustafa A. Darwish
Springer Science and Business Media LLC
AbstractThis study provides a comprehensive synthesis and meticulous examination of barium hexaferrite (BHF), barium titanate (BT), and their respective nanocomposites, unveiling their potential in specific applications, including electromagnetic interference shielding. The successful formation of BHF and BT was confirmed through Fourier-transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analyses, revealing distinct absorption peaks indicative of the tetragonal configuration of BT and the BHF’s crystal structure. Scanning electron microscopy (SEM) depicted the unique morphologies and dispersions of particles in the synthesized nanocomposites, with BHF appearing larger (~ 82 nm) than BT (~ 50 nm). Vibrating sample magnetometry (VSM) findings exhibited an increased resistance to demagnetization with the addition of BT, despite a slight decline at 75% BT concentration due to the non-magnetic nature of BT dominating. Uniquely, the study presented an in-depth analysis of the composites’ conductivity, detailing their non-monotonic behavior across a frequency range. A detailed investigation into the complex permittivity and permeability revealed the composite’s enhanced ability to store and dissipate both electrical and magnetic energy, a function influenced by the concentrations of BT and BHF. A pivotal highlight of this research was the significant achievement of a reflection loss (RL) value of − 45 dB at 9.3 GHz for the composite with 75% BHF, suggesting the composite’s potential as an effective microwave absorber. This study represents a significant step toward designing and optimizing nanocomposites for specific applications in the realm of electromagnetic materials.
Li-Xia Pang, Sen Ren, Xiao-Long Wang, Di Zhou, Wei-Guo Liu, Charanjeet Singh, Antonio Sergio Bezerra Sombra, and Moustafa Adel Darwish
Wiley
The compounds xBi(Mg2/3Nb1/3)O3‐(1 − x)(Ba0.8Sr0.2)TiO3 (xBMN‐(1 − x)BST, 0.08 ≤ x ≤ 0.14) are prepared via the traditional solid‐state reaction method and the ceramics are well densified in the sintering temperature range of 1280–1330 °C. X‐ray diffraction analysis shows that all the ceramics crystallize into perovskite structure. Proper amounts of BMN additions can effectively reduce grain sizes of the xBMN‐(1 − x)BST ceramics, resulting in more uniform microstructures. Accordingly, breakdown strength Eb is improved and a maximum value 250 kV cm−1 is obtained in ceramic with x = 0.10. Meanwhile, recoverable energy storage density Wrec of the 0.1BMN‐0.9BST ceramics reaches 2.03 J cm−3, and energy storage efficiency (η) is 96.8%. When the operating temperature increases to 150 °C, the Wrec and η values are about 1.02 J cm−3 under 150 kV cm−1 and 89.8%, respectively.
Xiao Li, Diming Xu, Di Zhou, Hu Nan, Shengzhao Pang, Moustafa Adel Darwish, Tao Zhou, and Shi-Kuan Sun
Royal Society of Chemistry (RSC)
A layered perovskite oxide, LiSmTO4, has been designed as an anode for high-performance lithium-ion batteries, delivering low-voltage lithium storage. The doping of large-radius Sm suppress the tilts and facilitate lithium ion mobility.
Xiao Li, Diming Xu, Di Zhou, Shengzhao Pang, Chao Du, Moustafa Adel Darwish, Tao Zhou, and Shi-Kuan Sun
Elsevier BV
Reda E. El-Shater, Hassan El Shimy, Samia A. Saafan, Moustafa A. Darwish, Di Zhou, Kadiyala Chandra Babu Naidu, Mayeen U. Khandaker, Z. Mahmoud, Alex V. Trukhanov, Sergei V. Trukhanov,et al.
Royal Society of Chemistry (RSC)
Samples of ferrite spinels doped with manganese cations were obtained via organic co-precipitation, and their structure, morphology and magnetic properties were studied.
K. A. Darwish, O. M. Hemeda, M. I. Abdel Ati, Anwer S. Abd El-Hameed, Di Zhou, Moustafa A. Darwish, and M. M. Salem
Springer Science and Business Media LLC
AbstractThe purpose of this study was to evaluate the electromagnetic (EM) properties of hybrid materials made from polypyrrole (PPy) and barium hexaferrite (HF) for possible use in electromagnetic interference (EMI) shielding applications. X-ray diffraction and Fourier-transform infrared spectroscopy methods were used to confirm the presence of PPy and HF phases inside the hybrid structure. A scanning electron microscope analysis revealed that the HF particles were evenly dispersed throughout the PPy structure. The composites’ dielectric and magnetic attributes were evaluated across a spectrum of frequencies, with the highest values observed in the PPy specimen. Adding HF to the PPy matrix altered the dielectric and magnetic properties of the composite, with the percentage of HF in the composite influencing its dominance over these properties. It was determined that a 25% HF content produced the most stable and efficient composite for absorbing EM waves in the X-band. This study demonstrates the potential of conductive polymer composites for EMI shielding applications, with advantages, such as improved EMI shielding, lightweight, flexibility, corrosion resistance, and tailored properties. The novelty lies in optimizing the composition of the PPy/HF composite and the characterization of its EM properties, providing insights into the design of more efficient EMI shielding materials.
Li‐Xia Pang, Di Zhou, Xiao‐Gang Yao, Hui‐Xing Lin, Chen Chen, Zhong‐Qi Shi, Fayaz Hussain, Moustafa Adel Darwish, Tao Zhou, Shi‐Kuan Sun,et al.
Wiley
AbstractMicrowave dielectric ceramics with intrinsic low sintering temperatures are potential candidates for low temperature co‐fired ceramics technology. In the present work, the (Li0.5Y0.5)MoO4 ceramic with tetragonal scheelite structures was selected to improve microwave dielectric properties of BiVO4 ceramics. As proved by X‐ray diffraction (XRD) results, scheelite structured solid‐solution ceramics were formed with x value ≤0.1 in the (Bi1−xLi0.5xY0.5x)(V1−xMox)O4. In situ XRD results further confirmed that the addition of (Li0.5Y0.5)MoO4 also lowered transition temperature from distorted monoclinic to tetragonal scheelite structure. When x value increased further, zircon phase was detected by XRD. Room and high‐temperature Raman spectra also supported the XRD results. Differences of thermal expansion coefficients of both monoclinic and tetragonal scheelite phases lead to an abnormality at phase transition temperature. Good microwave dielectric properties with permittivity above 70 and Qf (Q = quality factor = 1/dielectric loss and f = frequency) value above 8000 GHz were obtained in the (Bi1−xLi0.5xY0.5x)(V1−xMox)O4 solid‐solution ceramics with x value ≤0.1 sintered below 800°C. However, permittivity peak values at phase transition temperatures lead to large positive or negative temperature coefficient of resonant frequency, and this needs to be modified via composite technologies in the future.