journal article·2018-12

Magnetoacoustic Relaxation by Cr2+ Jahn–Teller Centers Revealed from Elastic Moduli

Vladimir V. Gudkov, Isaac B. Bersuker, Irina V. Zhevstovskikh, Maksim N. Sarychev, Sergei Zherlitsyn, Shadi Yasin, Yuri V. Korostelin

physica status solidi (a)· Volume 215· Issue 24
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Abstract

Magnetoacoustic investigations of the ZnSe:Cr2+ crystal with sphalerite structure, performed in Faraday geometry, show that there is a new channel of relaxation by the Cr2+ Jahn–Teller (JT) centers, induced by the magnetic field. A new method is worked out that allows to extract the relaxation time, either from the temperature changes of the elastic modulus in fixed magnetic field or from the magnetic field dependences at fixed temperatures. Application of both approaches to the imaginary part of the elastic modulus prove their efficiency and indicate that the magnetic field‐dependent relaxation rate reaches the magnitude of about 106 s−1 at T = 1.3 K.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Solid-state spectroscopy and crystallography · Magneto-Optical Properties and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Physics and Technology, Ural Federal University 19, Mira st. Ekaterinburg 620002 Russia

Institute for Theoretical Chemistry, the University of Texas at Austin Austin TX 78712 USA

M. N. Miheev Institute of Metal Physics UB, RAS, 18, S. Kovalevskaya st. Ekaterinburg 620137 Russia

Hochfeld‐Magnetlabor Dresden (HLD‐EMFL), Helmholtz‐Zentrum Dresden‐Rossendorf 01328 Dresden Germany

P. N. Lebedev Physical Institute RAS, 53, Leninskiy Prospect Moscow 119991 Russia

Funding

RFBR · UrFU Center of Excellence “Radiation and Nuclear Technologies” (Russia)

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