http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Benyoussef M. (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Benyoussef M.,Mura T.,Saitzek S.,Azrour F.,Blach J.-F.,Lahmar A.,Gagou Y.,El Marssi M.,Sayede A.,Jouiad M. 한국물리학회 2022 Current Applied Physics Vol.38 No.-
Nanostructured BaTi1-xSnxO3 (x = 0, 0.05 & 0.075) were successfully synthesized using the modified Pechini processing method. The phase purity and symmetry were examined by X-ray diffraction and Raman spectroscopy. Tetragonal symmetry was obtained for BaTiO3 (BT) while orthorhombic symmetry for Sn doped BT. BT exhibits an up-shift of the Curie temperature towards high temperatures (TC = 139 ◦C). In contrast, a down-shift was recorded for Sn doped BT. Then, indirect electrocaloric (EC) adiabatic temperature change ΔT and the energy storage performances were determined based on ferroelectric hysteresis loops. Interestingly, large EC responsivity of ΔT/ΔE = 0.81 × 10-6 K m/V was obtained for the BT accompanied with a moderate stored energy of 23 mJ/cm3 but with a high energy efficiency of 67%. The incorporation of Sn in BT was found to broaden the EC responsivity and to improve the energy efficiency up to 90%, recorded for the 5% Sn doped BT.
-
Magnetic Properties of Antiferromagnetic Thin Films with spin S
R. Masrour,M. Hamedoun,E. K. Hlil,A. Benyoussef 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.7
The mean field theory (MFT) and high temperature series expansions (HTSEs) of the magneticsusceptibility are used to investigate the magnetic properties in simple cubic (sc) antiferromagneticwith spins S = 1 and S = 3/2 films by using both the Ising and the XY models. The films consistingof l = 2, 3, 4, 5, 6 and infinite (1) interacting layers are studied up to sixth order series in x = Jwhere = 1kBT , for free-surface boundary conditions. The effects of finite size on the critical-pointbehavior are studied by extrapolation of the high-temperature series. The N´eel temperature TN(l)as a function of the spin layers numbers l is obtained by using HTSEs of the magnetic susceptibilityseries, the Pad´e approximant method and the MFT theory. The critical exponentassociatedwith the magnetic susceptibility is deduced. The N´eel temperatures TN(l) for the l-layers films areestimated from the divergence of the staggered susceptibility with exponents(1) and(2) for theIsing and the XY models, respectively. This is consistent with the basic assumptions of scalinglaws. The shift exponents of the N´eel temperature for the Ising and the XY models, respectively,are estimated.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
