scholarly journals Thermal annealing induced enhancement of room temperature magnetic memory effect in Fe-doped NiO nanoparticles

AIP Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 015211 ◽  
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Sheng Yun Wu
Keyword(s):  
Thermal Annealing ◽  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Memory ◽  
Nio Nanoparticles

Surface-spin driven room temperature magnetic memory effect in Fe-substituted NiO nanoparticles

2021 ◽  
Vol 536 ◽  
pp. 147856
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Hsin-Hao Chiu ◽  
Kuan-Ting Wu ◽  
Chia-Liang Cheng ◽  
Sheng Yun Wu
Keyword(s):  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Memory ◽  
Nio Nanoparticles ◽  
Surface Spin

Understanding the Magnetic Memory Effect in Fe-Doped NiO Nanoparticles for the Development of Spintronic Devices

2018 ◽  
Vol 2 (1) ◽  
pp. 278-290 ◽  
Author(s):  
Ashish Chhaganlal Gandhi ◽  
R. Pradeep ◽  
Yu-Chen Yeh ◽  
Tai-Yue Li ◽  
Chi-Yuan Wang ◽  
...  
Keyword(s):  
Memory Effect ◽  
Magnetic Memory ◽  
Nio Nanoparticles ◽  
Spintronic Devices

Strong memory effect at room temperature in nanostructured granular alloy Co0.3Cu0.7

RSC Advances ◽  
2015 ◽  
Vol 5 (116) ◽  
pp. 95695-95702 ◽  
Author(s):  
S. Dhara ◽  
R. Roy Chowdhury ◽  
B. Bandyopadhyay
Keyword(s):  
Temperature Distribution ◽  
Memory Effect ◽  
Room Temperature ◽  
Blocking Temperature ◽  
Magnetic Memory

Non-interacting magnetic CoCu nanoparticles with a blocking temperature distribution show strong magnetic memory effect even at room temperature.

Magnetic memory effect at room temperature in exchange coupled NiFe2O4-NiO nanogranular system

2017 ◽  
Vol 111 (18) ◽  
pp. 182406 ◽  
Author(s):  
Zhaoming Tian ◽  
Longmeng Xu ◽  
Yuxia Gao ◽  
Songliu Yuan ◽  
Zhengcai Xia
Keyword(s):  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Memory

Field pulse induced magnetic memory effect at room temperature in exchange coupled NiFe2O4/NiO nanocomposites

2019 ◽  
Vol 469 ◽  
pp. 504-509 ◽  
Author(s):  
Longmeng Xu ◽  
Yuxia Gao ◽  
Ashtar Malik ◽  
Yong Liu ◽  
Gaoshang Gong ◽  
...  
Keyword(s):  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Memory ◽  
Field Pulse

scholarly journals Room Temperature Magnetic Memory Effect in Cluster-Glassy Fe-Doped NiO Nanoparticles

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1318 ◽  
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Tai-Yue Li ◽  
B. Vijaya Kumar ◽  
P. Muralidhar Reddy ◽  
Jen-Chih Peng ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Room Temperature ◽  
Magnetic Measurements ◽  
Oxide System ◽  
Precipitation Method ◽  
Magnetic Memory ◽  
Nio Nanoparticles ◽  
Magnetic Anisotropy Energy ◽  
Spintronic Devices ◽  
Co Precipitation

The Fe-doped NiO nanoparticles that were synthesized using a co-precipitation method are characterized by enhanced room-temperature ferromagnetic property evident from magnetic measurements. Neutron powder diffraction experiments suggested an increment of the magnetic moment of 3d ions in the nanoparticles as a function of Fe-concentration. The temperature, time, and field-dependent magnetization measurements show that the effect of Fe-doping in NiO has enhanced the intraparticle interactions due to formed defect clusters. The intraparticle interactions are proposed to bring additional magnetic anisotropy energy barriers that affect the overall magnetic moment relaxation process and emerging as room temperature magnetic memory. The outcome of this study is attractive for the future development of the room temperature ferromagnetic oxide system to facilitate the integration of spintronic devices and understanding of their fundamental physics.

Sm-Doped NiO Nanoparticles for Magnetic Memory at Room Temperature

2021 ◽  
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Srikrishna Tummala ◽  
Hsin-Hao Chiu ◽  
Ming-Kang Ho ◽  
Tai-Yue Li ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetic Memory ◽  
Nio Nanoparticles

scholarly journals Room Temperature Magnetic Memory Effect in Nanodiamond/γ-Fe2O3 Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 648
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Rajakar Selvam ◽  
Chia-Liang Cheng ◽  
Sheng Yun Wu
Keyword(s):  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Measurements ◽  
Relaxation Times ◽  
Weight Fraction ◽  
Wide Distribution ◽  
Blocking Temperature ◽  
Magnetic Memory ◽  
Potential Applications ◽  
Fe2o3 Nanoparticle

We report a room temperature magnetic memory effect (RT-MME) from magnetic nanodiamond (MND) (ND)/γ-Fe2O3 nanocomposites. The detailed crystal structural analysis of the diluted MND was performed by synchrotron radiation X-ray diffraction, revealing the composite nature of MND having 99 and 1% weight fraction ND and γ-Fe2O3 phases, respectively. The magnetic measurements carried out using a DC SQUID magnetometer show the non-interacting superparamagnetic nature of γ-Fe2O3 nanoparticles in MND have a wide distribution in the blocking temperature. Using different temperature, field, and time relaxation protocols, the memory phenomenon in the DC magnetization has been observed at room temperature (RT). These findings suggest that the dynamics of MND are governed by a wide distribution of particle relaxation times, which arise from the distribution of γ-Fe2O3 nanoparticle size. The observed RT ferromagnetism coupled with MME in MND will find potential applications in ND-based spintronics.

scholarly journals Creation of pure non-crystalline diamond nanostructures via room temperature ion irradiation and subsequent thermal annealing

2021 ◽  
Author(s):  
Federico Picollo ◽  
Alfio Battiato ◽  
Federico Bosia ◽  
Fabio Scaffidi Muta ◽  
Paolo Olivero ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Room Temperature ◽  
Ion Irradiation ◽  
Group Iv ◽  
Chemical Bonds ◽  
Group Iv Elements ◽  
Silicon And Germanium ◽  
Subsequent Thermal Annealing

Carbon exhibits a remarkable range of structural forms, due to the availability of sp3, sp2 and sp1 chemical bonds. Contrarily to other group IV elements such as silicon and germanium,...

Sign in / Sign up

Export Citation Format

Share Document