Qingqi Cao

Collaborative Innovation Center of Advanced Microstructures

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Youwei Du

Nanjing University of Information Science and Technology

Dunhui Wang

Nanjing University

Dunhui Wang

Hangzhou Dianzi University

Dongxue Liu

Beijing Normal University

Jun Li

Xi'an Jiaotong University

Zhengming Zhang

Tsinghua University

Haicheng Xuan

Taiyuan University of Technology

Hong Hong

Collaborative Innovation Center of Advanced Microstructures

Shengcan Ma

Jiangxi University of Science and Technology

D. H. Wang

Hangzhou Dianzi University

Cooperative Institutions

Nanjing University

Collaborative Innovation Center of Advanced Microstructures

Chinese Academy of Sciences

National Laboratory of Solid State Microstructures

Hangzhou Dianzi University

University of Chinese Academy of Sciences

University of Science and Technology of China

Nanjing University of Science and Technology

Sichuan University

Institute of Physics

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Textured, dense and giant magnetostrictive alloy from fissile polycrystal

Acta Materialia (2015)

Yuanyuan Gong Dunhui Wang Qingqi Cao Youwei Du Ting Zhi

Fissile material

10.1016/j.actamat.2015.07.026

Cite

Citations (39)

The magnetocaloric effect and magnetic phase transitions in Dy(Co1−Al )2 compounds

Journal of Alloys and Compounds (2002)

Haidong Liu Dunhui Wang Shaolong Tang Qingqi Cao Tao Tang

Magnetic refrigeration

Laves phase

10.1016/s0925-8388(02)00848-4

Cite

Citations (47)

Electric control of magnetism at room temperature

Scientific Reports (2012)

Liaoyu Wang Dunhui Wang Qingqi Cao Yuanxia Zheng Haicheng Xuan

In the single-phase multiferroics, the coupling between electric polarization (P) and magnetization (M) would enable the magnetoelectric (ME) effect, namely M induced and modulated by E, and conversely P by H. Especially, the manipulation of magnetization by an electric field at room-temperature is of great importance in technological applications, such as new information storage technology, four-state logic device, magnetoelectric sensors, low-power magnetoelectric device and so on. Furthermore, it can reduce power consumption and realize device miniaturization, which is very useful for the practical applications. In an M-type hexaferrite SrCo(2)Ti(2)Fe(8)O(19), large magnetization and electric polarization were observed simultaneously at room-temperature. Moreover, large effect of electric field-controlled magnetization was observed even without magnetic bias field. These results illuminate a promising potential to apply in magnetoelectric devices at room temperature and imply plentiful physics behind them.

Magnetoelectric effect

Magnetism

10.1038/srep00223

Cite

Citations (120)

Voltage control magnetism and ferromagnetic resonance in an Fe₁₉Ni₈₁/PMN-PT heterostructure by strain

Chinese Physics B (2021)

Jun Ren Junming Li Sheng Zhang Jun Li Wenxia Su

Voltage control magnetism has been widely studied due to its potential applications in the next generation of information technology. PMN-PT, as a single crystal ferroelectric substrate, has been widely used in the study of voltage control magnetism because of its excellent piezoelectric properties. However, most of the research based on PMN-PT only studies the influence of a single tensile (or compressive) stress on the magnetic properties due to the asymmetry of strain. In this work, we show the effect of different strains on the magnetic anisotropy of an Fe 19 Ni 81 /(011) PMN-PT heterojunction. More importantly, the (011) cut PMN-PT generates non-volatile strain, which provides an advantage when investigating the voltage manipulation of RF/microwave magnetic devices. As a result, a ferromagnetic resonance field tunability of 70 Oe is induced in our sample by the non-volatile strain. Our results provide new possibilities for novel voltage adjustable RF/microwave magnetic devices and spintronic devices.

Magnetism

Strain engineering

10.1088/1674-1056/ac43ab

Cite

Citations (2)

Electric control of magnetism and magnetocaloric effects in LaFe_11.4Si_1.6H_1.5using ferroelectric PMN–PT

Journal of Physics D Applied Physics (2016)

Chuancong Wang Yong Hu Dunhui Wang Qingqi Cao Yanyan Shao

The alloy with first-order magnetic phase transition has an advantage to exhibit large magnetoelectric effect in strain-mediated multiferroic composites, since the strain can drive its phase transition and consequently lead to a large magnetic change. In the present paper, we investigate the electric field manipulation of magnetic and magnetocaloric properties in LaFe11.4Si1.6H1.5/Pb(Mg1/3Nb2/3)O3–PbTiO3 laminate. By applying an electric field on the ferroelectric substrate, the relative change of magnetization has a peak value of −8% around the Curie temperature, showing a large converse magnetoelectric effect. As for the magnetocaloric performance, the peak temperature of magnetic entropy change (ΔS M) has a shift of 3 K to low temperature and the maximal value of ΔS M keeps almost unchanged under an electric field of 8 kV cm−1. Moreover, the thermal and magnetic hysteresis can be reduced as well with the application of the electric field.

Magnetism

Magnetic refrigeration

10.1088/0022-3727/49/40/405003

Cite

Citations (6)

Preparation and characterization of rectangular tin dioxide microtubes

Journal of Crystal Growth (2005)

Junhong Duan Qingqi Cao Shaoguang Yang Hongbo Huang Xiaoning Zhao

Rutile

Tin dioxide

Characterization

10.1016/j.jcrysgro.2005.10.135

Cite

Citations (25)

Author response for "Thickness-dependent Hydrogen Evolution Reaction Activity on Pd film: an insightful view from magnetism"

Dongxue Liu Hong Hong Qingqi Cao Dunhui Wang Du You-Wei

Magnetism

10.1039/d4tc05009f/v2/response1

Cite

Citations (0)

Enhanced hydrogen evolution reaction in FePt film with remanence due to decrease in domain walls

Rare Metals (2023)

Hong Hong Dongxue Liu Jun Li Junming Li Liqian Wu

Overpotential

10.1007/s12598-023-02491-x

Cite

Citations (0)

Effects of pre-deformation on the martensitic transformation and magnetocaloric property in Ni-Mn-Co-Sn ribbons

Chinese Physics B (2010)

Shengcan Ma Haicheng Xuan Chengliang Zhang Liao-Yu Wang Qingqi Cao

This paper investigates the martensitic transformation and magnetocaloric effect in pre-deformed Ni-Mn-Co-Sn ribbons. The experimental results show that the reverse martensitic transformation temperature TM increases with the increasing pre-pressure, suggesting that pre-deformation is another effective way to adjust TM in ferromagnetic shape memory alloys. Large magnetic entropy changes and refrigerant capacities are obtained in these ribbons as well. It also discusses the origin of the enhanced martensitic transformation temperature and magnetocaloric property in pre-deformed Ni-Mn-Co-Sn ribbons.

Magnetic refrigeration

Diffusionless transformation

10.1088/1674-1056/19/11/117503

Cite

Citations (9)

Synthesis and photoluminescence of fluorinated graphene quantum dots

Applied Physics Letters (2013)

Qian Feng Qingqi Cao Ming Li Fuchi Liu Nujiang Tang

Fluorinated graphene quantum dots (F-GQDs) were synthesized by cutting fluorinated graphene through a hydrothermal approach. The F-GQDs with oxygen-rich functional groups have a F/C atomic ratio of ca. 23.68% and diameter of 1-7 nm. The photoluminescence (PL) properties of the F-GQDs were investigated. The results showed that besides exhibiting bright blue PL, the F-GQDs display a clear upconversion PL.

Hydrothermal Synthesis

10.1063/1.4774264

Cite

Citations (121)