P. M. Vetoshko, N. A. Gusev, D. A. Chepurnova, E. V. Samoilova, I. I. Syvorotka, I. M. Syvorotka, A. K. Zvezdin, A. A. Korotaeva, V. I. Belotelov, “Flux-gate magnetic field sensor based on yttrium iron garnet films for magnetocardiography investigations”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 42, Issue 16,Pages <nobr>64

This article is cited in 26 papers

Flux-gate magnetic field sensor based on yttrium iron garnet films for magnetocardiography investigations

P. M. Vetoshko^ab, N. A. Gusev^ac, D. A. Chepurnova^ad, E. V. Samoilova^ad, I. I. Syvorotka^e, I. M. Syvorotka^e, A. K. Zvezdin^ac, A. A. Korotaeva^ad, V. I. Belotelov^af

^a Russian Quantum Center, Skolkovo, Moscow
^b Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
^c Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^d Russian Cardiologycal Scientific Centre, Ministry of Health Care and Medical Industry of the Russian Federation, Moscow
^e Karat Scientific and Production Enterprise, L'vov
^f Lomonosov Moscow State University

Abstract: A new type of f lux-gate vector magnetometer based on epitaxial yttrium iron garnet films has been developed and constructed for magnetocardiography (MCG) investigations. The magnetic field sensor can operate at room temperature and measure MCG signals at a distance of about 1 mm from the thoracic cage. The high sensitivity of the sensor, better than 100 fT/Hz$^{1/2}$, is demonstrated by the results of MCG measurements on rats. The main MCG pattern details and R-peak on a level of 10 pT are observed without temporal averaging, which allows heart rate anomalies to be studied. The proposed magnetic sensors can be effectively used in MCG investigations.

Received: 21.03.2016