The growth mechanism and ferroelectric domains of diisopropylammonium bromide films synthesized via 12-crown-4 addition at room temperature

2016 ◽  
Vol 18 (11) ◽  
pp. 7626-7631 ◽  
Author(s):  
Kaige Gao ◽  
Cong Xu ◽  
Zepeng Cui ◽  
Chuang Liu ◽  
Linsong Gao ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Growth Mechanism ◽  
Spontaneous Polarization ◽  
Room Temperature ◽  
High Curie Temperature ◽  
Ferroelectric Domains

Diisopropylammonium bromide (DIPAB) has attracted great attention as a molecular ferroelectric with large spontaneous polarization and high Curie temperature.

Screening and Design of Novel 2D Ferromagnetic Materials with High Curie Temperature above Room Temperature

2018 ◽  
Vol 10 (45) ◽  
pp. 39032-39039 ◽  
Author(s):  
Zhou Jiang ◽  
Peng Wang ◽  
Jianpei Xing ◽  
Xue Jiang ◽  
Jijun Zhao
Keyword(s):  
Curie Temperature ◽  
Room Temperature ◽  
Ferromagnetic Materials ◽  
High Curie Temperature

High Curie temperature and carrier mobility of novel Fe, Co and Ni carbide MXenes

Nanoscale ◽  
2020 ◽  
Vol 12 (21) ◽  
pp. 11627-11637 ◽  
Author(s):  
Y. Hu ◽  
X. Y. Liu ◽  
Z. H. Shen ◽  
Z. F. Luo ◽  
Z. G. Chen ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Carrier Mobility ◽  
Room Temperature ◽  
High Curie Temperature

MXenes have intrinsic and robust ferromagnetism well above room temperature as well as high and anisotropic carrier mobility.

scholarly journals Multifunctional molecular ferroelectric with Chiral feature, High Curie Temperature, Large Spontaneous Polarization and Photoluminescence: (C9H14N)2CdBr4

2021 ◽  
Author(s):  
Yu-Kong Li ◽  
Yuan Yuan Lai ◽  
Ting-Ting Ying ◽  
Ding-Chong Han ◽  
Yu-Hui Tan ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Spontaneous Polarization ◽  
Metal Halide ◽  
High Curie Temperature ◽  
Intrinsic Properties ◽  
Inorganic Hybrid ◽  
Spintronic Devices ◽  
Potential Applications ◽  
Low Dimensional

Low dimensional chiral organic-inorganic hybrid metal halide have attracted much attention in recent years due to their unique intrinsic properties, including potential applications in optoelectronic and spintronic devices. However, low...

Superparamagnetic Nanocrystalline ZnFe2O4 with a Very High Curie Temperature

2008 ◽  
Vol 8 (8) ◽  
pp. 3955-3958 ◽  
Author(s):  
Sasanka Deka ◽  
P. A. Joy
Keyword(s):  
Magnetic Properties ◽  
Curie Temperature ◽  
Temperature Variation ◽  
Nanocrystalline Materials ◽  
Zinc Ferrite ◽  
Room Temperature ◽  
Magnetic Hysteresis ◽  
High Curie Temperature ◽  
Particle Sizes ◽  
Very High

Studies on the magnetic properties of nanocrystalline ZnFe2O4 synthesized by an autocombustion method are reported. Superparamagnetic behavior is observed for the nanocrystalline materials with particle sizes of 8 nm and 17nm, with superparamagnetic blocking temperatures of 65 K and 75 K, respectively. Magnetic hysteresis with very large coercivities of 533 Oe and 325 Oe, respectively, are observed at 12 K. Studies on the temperature variation of the magnetization above room temperature indicate that the Curie temperature is as high as ∼800 K when compared to the paramagnetic nature of bulk zinc ferrite at room temperature.

Piezoelectric and Dielectric Properties of MnO2-Modified Bi(Mg1/2Ti1/2)O3–PbTiO3

2011 ◽  
Vol 415-417 ◽  
pp. 1983-1987
Author(s):  
Xiao Na Wang ◽  
Qing Chi Sun ◽  
Wei Bing Ma ◽  
Tao Liu ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Curie Temperature ◽  
Room Temperature ◽  
Piezoelectric Properties ◽  
High Curie Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stable Temperature ◽  
Curie Temperature Tc ◽  
Dielectric And Piezoelectric Properties

We reported that Bi(Mg1/2Ti1/2)O3–PbTiO3(BMT-PT) systems had high piezoelectric, dielectric performances and high Curie temperature. The phase structure of the system was identified by X-ray diffraction analysis. The piezoelectric and dielectric properties were also investigated. The results showed that 0.6BMT–0.4PT (Mg/Ti = 0.5:0.5) with 1mol% MnO2was the optimum composition which exhibited the highest curie temperature Tc = 511 °C and the stable temperature of dielectric loss reached to 500 °C. Further, the dielectric and piezoelectric properties of this composition were given as follows:kp = 22.5%;εr= 734; room temperature d33= 131.3 pC/N; tanδ = 1.96%.

scholarly journals Intrinsic Complex Vacancy-Induced d0 Magnetism in Ca2Nb2O7 PLD Film

2021 ◽  
Vol 8 ◽  
Author(s):  
Linjie Wu ◽  
Yongjia Zhang ◽  
Zhongquan Nie ◽  
Ensi Cao
Keyword(s):  
Curie Temperature ◽  
Room Temperature ◽  
Single Phase ◽  
Magnetic Measurement ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Ferromagnetic Behavior ◽  
High Curie Temperature ◽  
D0 Magnetism ◽  
Element Mapping

Introducing magnetism into the ferroelectric Ca2Nb2O7 with high Curie temperature can make it a potential multiferroic material at room temperature. Stoichiometric Ca2Nb2O7, nonstoichiometric Ca1.9Nb2O7-δ and Ca2Nb1.9O7-δ single phase films were deposited on STO (110) substrate by pulsed laser deposition under appropriate conditions. The films were characterized by XRD, FE-SEM, Element mapping and XPS. Both stoichiometric Ca2Nb2O7 and Ca1.9Nb2O7-δ films were diamagnetic in the magnetic measurement and ab initio calculations, while the Ca2Nb1.9O7-δ film with the complex vacancy of VNb+O exhibited ferromagnetic behavior at room temperature, with the saturated magnetization of 3.6 emu/cm3. Calculations on the Ca2Nb2O7 (010) surface indicate that the VNb+O can induce spin polarization on the residual O atoms around the Nb vacancies, and the system was most stable when the Nb and O vacancies were the 4th nearest-neighbored, with FM coupling energetically more stable than the AFM coupling. Our work verified experimentally and theoretically the feasibility of introducing ferromagnetism into Ca2Nb2O7 film by the intrinsic complex vacancy of VNb+O.

Sign in / Sign up

Export Citation Format

Share Document