최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기주관연구기관 | 한국과학기술원 Korea Advanced Institute of Science and Technology |
---|---|
연구책임자 | 신민철 |
참여연구자 | 민병철 , 박승영 |
보고서유형 | 2단계보고서 |
발행국가 | 대한민국 |
언어 | 한국어 |
발행년월 | 2017-03 |
과제시작연도 | 2016 |
주관부처 | 미래창조과학부 Ministry of Science, ICT and Future Planning |
등록번호 | TRKO201800005918 |
과제고유번호 | 1711035750 |
사업명 | STEAM연구 |
DB 구축일자 | 2018-05-12 |
키워드 | 나노라디오.스핀RF소자.스핀변복조.스핀무선통신.스핀소자측정기술.Nano radio.spin RF device.spin modulation.spin wireless communication.spin device measurement technology. |
DOI | https://doi.org/10.23000/TRKO201800005918 |
○ 나노자성체에서의 스핀전달토크 현상을 이용한 스핀트로닉 RF 소자 개발
○ 자기터널접합, 360° 자구벽, 수직자화 구조를 이용한 고주파 스핀 RF 소자의 설계 및 제조기술을 확보
○ 새로운 물리현상인 Vortex 및 Skyrmion 구조, 스핀 홀 효과 및 스핀궤도토크, 열적 스핀 전류를 이용한 고주파 발진 기술을 연구하고, 스핀웨이브를 이용한 DMI 측정 기술을 개발
○ 단일소자에서 400 nW/GHz의 출력특성을 달성하였으며, 3개 이상의 복수의 소자에 대하여 injection locki
○ 나노자성체에서의 스핀전달토크 현상을 이용한 스핀트로닉 RF 소자 개발
○ 자기터널접합, 360° 자구벽, 수직자화 구조를 이용한 고주파 스핀 RF 소자의 설계 및 제조기술을 확보
○ 새로운 물리현상인 Vortex 및 Skyrmion 구조, 스핀 홀 효과 및 스핀궤도토크, 열적 스핀 전류를 이용한 고주파 발진 기술을 연구하고, 스핀웨이브를 이용한 DMI 측정 기술을 개발
○ 단일소자에서 400 nW/GHz의 출력특성을 달성하였으며, 3개 이상의 복수의 소자에 대하여 injection locking에 성공
○ 스핀 변복조 기법 창안 및 세계 최초 스핀 무선 통신 구현
○ 스핀 구동 기술로서 TR 어레이 기반의 스핀 발진기 기술 창안
○ 스핀 변조 기술로서 스핀 OOK 기법 창안
○ 저전력 CMOS 공정을 이용한 송신기 및 수신기를 구현하여 스핀 변조 CMOS 무선 통신 구현
○ 나노 라디오 개발에 필요한 스핀 발진기 및 스핀소자 측정 기술 개발 및 시스템 구축
○ 자구벽형 스핀 발진기 측정기술 개발 및 스핀 궤도결합 관련 분석기술 개발
(출처 : 요약서 4p)
Ⅳ. Achievements and contributions
1. Design and fabrication of high frequency spin RF devices
- We have designed the spintronic RF devices combining magnetic tunnel junctions and magnetic nanowires, and simulated their microwave properties.
- We have fabricated nano-sized magnetic tunne
Ⅳ. Achievements and contributions
1. Design and fabrication of high frequency spin RF devices
- We have designed the spintronic RF devices combining magnetic tunnel junctions and magnetic nanowires, and simulated their microwave properties.
- We have fabricated nano-sized magnetic tunnel junctions using thin film deposition, etching, insulation, and metalization.
2. Spin RF devices based on magnetic tunnel junctions and their synchronization
- We have observed microwave oscillation in magnetic tunnel junctions with an elliptical shape, and demonstrate a frequency fulling of two individual spin torque nano-oscillators with four times enhancement of microwave power.
3. Spin RF devices using 360° domain wall and their synchronization
- We have developed spin RF devices using 360° domain wall, and achieved a microwave output of 400 nW/GHz.
- We have achieved an injection locking of three spin RF devices using -10 dBm external signal.
4. Spin RF devices with perpendicular magnetic layers
- We have simulated the microwave response of spin RF devices with perpendicular magnetic layers, and studied precessional motion of the magnetization with cone state driven by perpendicular current.
- We have fabricated magnetic tunnel junctions with perpendicular magnetic layers, and studied the effect of insertion layer, temperature, dependence of magnetic anisotropy, and magnetic proximity effect.
5. Spin RF devices using magnetic Vortex and Skyrmion
- We have designed and fabricated spin RF devices using vortex structure.
- We have studied the spin dynamics of magnetic Skyrmion using X-ray microscopy.
6. Spin RF devices using spin Hall effect and spin-orbit torques
- We have measured the spin-orbit torques in magnetic nanostructures using ferromagnetic resonance and anomalous Hall effect.
- We have designed and fabricated spin RF devices using spin Hall effect and spin-orbit torques, and studied their synchronization.
7. Spin RF devices using thermal spin current
- We have studied the spin precession in magnetic layers driven by ultrafast demagnetization and spin-dependent Seebeck effect.
8. Measurement of DMI using spin wave
- We have measured the DMI in the magnetic systems with broken inversion symmetry using spin wave.
9. Spin communication/ Spin modulation-demodulation technology
- We have suggested modulation scheme based spin oscillator noise and SNR analysis and achieved the world’s first realization of 11.8Mbps spin OOK wireless communication system at 1 m distance
10. Spin actuation circuit
- We have invented and realized driving technology in TR array based spin oscillator which support the digital operation : 24 bit control, nA step analysis realization
11. Low-power, low-noise CMOS transmitter design for spin communication
- We have designed 180 nm CMOS single transmitter chip for spin communication and obtained the results of 40 dB gain, 4 dB noise figure
12. Low-power, low-noise CMOS receiver design for spin communication
- We have designed 180 nm CMOS single receiver chip for spin communication and obtained the results of 30 dB gain, 3 dB noise figure and demodulated circuit integration
13. Spin array based frequency modulating CMOS transmitter, receiver design
- We have designed 180 nm CMOS transmitter, receiver design for spin array communication, which is possibility of frequency modulation using low-power spin array device
14. Injection Locking study
- We have designed of injection locking elemental technology that can accept up to 60 GHz
- We haver obtained characteristics of injection locking of spin torque oscillator by employing computer simulation.
15. Synchronization of spin torque oscillators with various interaction through the simulation.
- We have simulated the synchronization of GMR pillar with self-emitted microwave current and phase shifter.
- We have calculated the synchronization of spin Hall oscillators with magnetodipolar coupling and obtained the output power which depends the phase difference between spin Hall oscillators.
- We have designed the spin toque oscillators directly integrated on a MOSFET and calculated the output voltage of amplifier.
- We have designed the time delayed self-feedback cicuit with spin torque oscillator and calculated output power of spin torque oscillators.
16. Investigation of angle dependence of spin torque through quantum mechanical spin transport theory.
- We have simulated the spin transport based on the non-equilibrium Green function in the magnetic tunnel junction and found the magnitud of spin torque with angle dependence.
- We have described the spin dynamics by employing the NEGF-LLGS.
- We have calculated the origin of spin transfer torque in metal/ferromagnet by using microscopic modeling
17. Development of micromagnetic simulation
- We developed the micromagnetic simulator.
18. Development of measurement techniques for magnetic tunneling junctions and domain wall spin torque oscillators.
- We have successfully installed the equipment for characterizing spin torque oscillators under the horizontal and vertical magnetic field environment.
- We have developed the measurement technology of magnetic tunnel junction and domain wall spin torque oscillators.
- We have designed the waveguide for measurement of microwave dependency characteristics of the devices.
(출처 : SUMMARY 14p)
과제명(ProjectTitle) : | - |
---|---|
연구책임자(Manager) : | - |
과제기간(DetailSeriesProject) : | - |
총연구비 (DetailSeriesProject) : | - |
키워드(keyword) : | - |
과제수행기간(LeadAgency) : | - |
연구목표(Goal) : | - |
연구내용(Abstract) : | - |
기대효과(Effect) : | - |
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.