Contents

JETP Letters

Vol. 110, No. 9, 2019

Fields, Particles, and Nuclei

Diffraction Enhancement of the Stern–Gerlach Effect for a Neutron in a Crystal

V. V. Voronin, S. Yu. Semenikhin, D. D. Shapiro, Yu. P. Braginetz, V. V. Fedorov, V. V. Nesvizhevsky, M. Jentschel, A. Ioffe and Ya. A. Berdnikov p. 581  abstract

Condensed Matter

Effects of Ordering in Fe–xAl Alloys

A. M. Balagurov, I. A. Bobrikov and I. S. Golovin p. 585  abstract

Acceleration of the Decay of Excitons in an Organometallic Perovskite Film on the Crystalline Silicon Surface

K. S. Sekerbayev, Ye. T. Taurbayev, I. N. Saraeva, S. I. Kudryashov, A. A. Ionin and V. Yu. Timoshenko p. 592  abstract

Mechanism of Ferromagnetic Ordering of Mn Chains in CaMnGe2O6 Clinopyroxene

F. V. Temnikov, E. V. Komleva, Z. V. Pchelkina and S. V. Streltsov p. 595  abstract

Observation of Electron Spin Resonance in the Microwave-Induced Photovoltage

A. V. Shchepetilnikov, A. R. Khisameeva, Yu. A. Nefyodov and I. V. Kukushkin p. 599  abstract

Disordering in Pyridine at High Pressures

E. L. Gromnitskaya, I. V. Danilov, M. V. Kondrin and V. V. Brazhkin p. 603  abstract

Complex Dynamics of the Cascade of Kink–Antikink Interactions in a Linear Defect of the Electroconvective Structure of a Nematic Liquid Crystal

V. A. Delev, V. N. Nazarov, O. A. Scaldin, E. S. Batyrshin and E. G. Ekomasov p. 607  abstract

Mössbauer Study of the Magnetic Transition in ϵ-Fe2O3 Nanoparticles Using Synchrotron and Radionuclide Sources

Yu. V. Knyazev, A. I. Chumakov, A. A. Dubrovskiy, S. V. Semenov, S. S. Yakushkin, V. L. Kirillov, O. N. Martyanov and D. A. Balaev p. 613  abstract

Destructive Quantum Interference and Exceptional Points in the High-Frequency Response of a Two-State System

A. A. Gorbatsevich and N. M. Shubin p. 618  abstract

Phase Transformations in Copper–Tin Solid Solutions at High-Pressure Torsion

B. B. Straumal, A. R. Kilmametov, I. A. Mazilkin, A. Korneva, P. Zieba and B. Baretzky p. 624  abstract

Influence of Shape Effects on the Spectrum of Spin Waves in a Finite Array of Ferromagnetic Pillars

S. A. Osokin, A. R. Safin and S. A. Nikitov p. 629  abstract