Hyperfine field assessment of the magnetic structure of ${\mathrm{ZrZn}}_{2}$

Hyperfine field assessment of the magnetic structure of ${ZrZn}_{2}$

A. V. Tsvyashchenko, D. A. Salamatin, A. Velichkov, A. V. Salamatin, V. N. Trofimov, L. N. Fomicheva, V. A. Sidorov, A. V. Fedorov, A. V. Nikolaev, G. K. Ryasny, A. V. Spasskiy, and M. Budzynski

Phys. Rev. B 91, 104423 – Published 24 March 2015

Abstract

Time differential perturbed $γ γ$ angular correlation spectroscopy on ${}^{111}{Cd}$ nuclei probes inserted in ${ZrZn}_{1.9}$ is used to measure the magnetic hyperfine fields at Zr and Zn sites and the electric-field gradient $V_{z z}$ at Zn sites as a function of temperature at various pressures and as a function of pressure at the temperature 4 K. Our data indicate that the local magnetic moment of Zr in the magnetically ordered state is substantially larger than its value obtained from the macroscopic measurements. The transformation between paramagnetic and magnetically ordered states is considered as a fluctuation-induced first-order transition. We conclude that ${ZrZn}_{2}$ is not a simple ferromagnet and discuss a possible type of its magnetic ordering.

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Received 19 June 2014
Revised 3 February 2015

DOI:https://doi.org/10.1103/PhysRevB.91.104423

Authors & Affiliations

A. V. Tsvyashchenko^*

Vereshchagin Institute for High Pressure Physics, RAS, 142190 Moscow, Troitsk, Russia and Skobeltsyn Institute Of Nuclear Physics Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia

D. A. Salamatin

Vereshchagin Institute for High Pressure Physics, RAS, 142190 Moscow, Troitsk, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia

A. Velichkov, A. V. Salamatin, and V. N. Trofimov

Joint Institute for Nuclear Research, Dubna, P.O. Box 79, Moscow, Russia

L. N. Fomicheva, V. A. Sidorov, and A. V. Fedorov

Vereshchagin Institute for High Pressure Physics, RAS, 142190 Moscow, Troitsk, Russia

A. V. Nikolaev

Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia

G. K. Ryasny and A. V. Spasskiy

Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia

M. Budzynski

Institute of Physics, M. Curie-Sklodowska University, 20-031 Lublin, Poland

^*tsvyash@hppi.troitsk.ru

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Vol. 91, Iss. 10 — 1 March 2015

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Physical Review B

covering condensed matter and materials physics

Hyperfine field assessment of the magnetic structure of ${ZrZn}_{2}$

A. V. Tsvyashchenko, D. A. Salamatin, A. Velichkov, A. V. Salamatin, V. N. Trofimov, L. N. Fomicheva, V. A. Sidorov, A. V. Fedorov, A. V. Nikolaev, G. K. Ryasny, A. V. Spasskiy, and M. Budzynski

Phys. Rev. B 91, 104423 – Published 24 March 2015

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review B

covering condensed matter and materials physics

Hyperfine field assessment of the magnetic structure of ZrZn2

A. V. Tsvyashchenko, D. A. Salamatin, A. Velichkov, A. V. Salamatin, V. N. Trofimov, L. N. Fomicheva, V. A. Sidorov, A. V. Fedorov, A. V. Nikolaev, G. K. Ryasny, A. V. Spasskiy, and M. Budzynski

Phys. Rev. B 91, 104423 – Published 24 March 2015

Abstract

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Hyperfine field assessment of the magnetic structure of ${ZrZn}_{2}$