(See also PNPI HEPD Reports "Main Scientific Activities 1997-2001"
and " Main Scientific Activities 2002-2006" - pages 156,   233,   272.
"Main Scientific Activities 2007-2012" - page 154.
"Main Scientific Activities 2010-2013" - page 80,
"PNPI Scientific Highlights, 2014" - page 57.
"PNPI The main results of scientific activity, 2015" - page 52.

Meson Physics of a Condensed Matter Laboratory carries out the investigations of the various compounds on the muon channel of the PNPI synchrocyclotron making use of the *µSR*–method:

1. The study of the magnetic phase transitions and the local magnetic fields in the RMn₂O₅ manganites.
2. The study of the multiferroics TbMnO₃ and Tb_xBi_1-xMnO₃.
3. The study of the CoFe₂O₄- and MnFe₂O₄-ferrofluids dispersed in the H₂O water.
4. The study of the phase transitions in the chromium steels.

Now a group physicists of Laboratory of meson physics and a condensed matter PNPI take a part in the investigations at ANKE spectrometer. Topics of these measurements are:

1. Investigation of ω- and φ-meson production in pn-interactions
   close-to-threshold and experimental prove of Okubo-Zweig-Izuka (OZI) rule
   in this channel;
   
   
2. Test of an isospin invariance in Λ- and Σ^0,± -hyperons production in
   pp- and pn-interactions;
   
   
3. Investigation of a Λ(1405)-resonance and antikaon interactions with nucleons and light nucleus in the reaction of K⁺ K^- and K⁰ pair production
   close-to-threshold;
   
   
4. Investigation of the φ-meson's properties modification in nuclear matter.