Magnetotransport and electronic noise in superparamagnetic magnetic tunnel junctions

被引：13
作者：
Zhang, Yiou [1 ]
He, Guanyang [1 ]
Zhang, Xixiang [2 ]
Xiao, Gang [1 ]
机构：
[1] Brown Univ, Dept Phys, Providence, RI 02912 USA
[2] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Thuwal 239955, Saudi Arabia
来源：
APPLIED PHYSICS LETTERS | 2019年 / 115卷 / 02期
关键词：
SENSORS;
D O I：
10.1063/1.5110715
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the magnetotransport and noise properties of magnetic tunnel junctions incorporating a superparamagnetic free layer, in a wide temperature range from 150K to 400 K. Both 1/f noise and sensitivity reach the maximum near the blocking temperature of the superparamagnetic transition. The smooth change of noise around the blocking temperature is attributed to size distribution of nanoclusters comprising the free layer. The best detectability (40 nT/root Hz at 1 Hz) is achieved at 350 K. In ferromagnetic and superparamagnetic states, 1/f noise follows different scaling relations with respect to sensitivity. The change of scaling law is explained by thermodynamics of the nanoclusters. Published under license by AIP Publishing.
引用
收藏
页数：4
相关论文
共 50 条
[41]   Magnetic Barkhausen Noise Technique for Fatigue Detection and Classification in Martensitic Stainless-Steel [J].
Shenoy, Bharath Basti ;
Li, Zi ;
Udpa, Lalita ;
Udpa, Satish ;
Deng, Yiming ;
Seuaciuc-Osorio, Thiago .
JOURNAL OF NONDESTRUCTIVE EVALUATION, DIAGNOSTICS AND PROGNOSTICS OF ENGINEERING SYSTEMS, 2022, 5 (04)
[42]   A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose [J].
Wu, Cheng-Chun ;
Liu, Szu-Chieh ;
Chiu, Shih-Wen ;
Tang, Kea-Tiong .
SENSORS, 2016, 16 (11)
[43]   Deep Learning Models for Magnetic Cardiography Edge Sensors Implementing Noise Processing and Diagnostics [J].
Sakib, Sadman ;
Fouda, Mostafa M. ;
Al-Mahdawi, Muftah ;
Mohsen, Attayeb ;
Oogane, Mikihiko ;
Ando, Yasuo ;
Fadlullah, Zubair Md .
IEEE ACCESS, 2022, 10 :2656-2668
[44]   On the Mechanical Properties Determination of Armco Steel Using Magnetic Hysteresis Loop and Barkhausen Noise [J].
Kosmas, K. .
MATERIALS AND APPLICATIONS FOR SENSORS AND TRANSDUCERS, 2012, 495 :269-271
[45]   Reduction of Magnetic Noise Originating from a Cryocooler of a Magnetoencephalography System Using Mobile Reference Sensors [J].
Oyama, Daisuke ;
Kawai, Jun ;
Kawabata, Miki ;
Adachi, Yoshiaki .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2022, 32 (04)
[46]   Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance [J].
Mateos, I. ;
Ramos-Castro, J. ;
Lobo, A. .
SENSORS AND ACTUATORS A-PHYSICAL, 2015, 235 :57-63
[47]   Contributors to fluxgate magnetic noise in permalloy foils including a potential new copper alloy regime [J].
Miles, David M. ;
Dvorsky, Richard ;
Greene, Kenton ;
Hansen, Christian T. ;
Narod, B. Barry ;
Webb, Michael D. .
GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS, 2022, 11 (01) :111-126
[48]   OFDM Radar and Communication Joint System Using Opto-Electronic Oscillator With Phase Noise Degradation Analysis and Mitigation [J].
Xue, Zhujun ;
Li, Shangyuan ;
Li, Jiading ;
Xue, Xiaoxiao ;
Zheng, Xiaoping ;
Zhou, Bingkun .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2022, 40 (13) :4101-4109
[49]   Discussion on the Relationship Between Sensor Noise and Glass-Covered Amorphous Magnetic Wires Annealing Temperature [J].
Yan, Bin ;
Zhu, Wanhua ;
Sun, Yu ;
Lu, Zheng ;
Zhuang, Xin ;
Fang, Guangyou .
IEEE SENSORS JOURNAL, 2024, 24 (07) :9792-9799
[50]   Suppression of the Bias Error Induced by Magnetic Noise in a Spin-Exchange Relaxation-Free Gyroscope [J].
Fan, Wenfeng ;
Quan, Wei ;
Liu, Feng ;
Xing, Li ;
Li, Gang .
IEEE SENSORS JOURNAL, 2019, 19 (21) :9712-9721
12345