Experimental study of magnetocaloric effect in the two-level quantum system KTm(MoO4)(2)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10379298" target="_blank" >RIV/00216208:11320/18:10379298 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physb.2017.09.083" target="_blank" >https://doi.org/10.1016/j.physb.2017.09.083</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physb.2017.09.083" target="_blank" >10.1016/j.physb.2017.09.083</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental study of magnetocaloric effect in the two-level quantum system KTm(MoO4)(2)

Popis výsledku v původním jazyce

KTm(MoO4)(2) belongs to the family of binary alkaline rare-earth molybdates. This compound can be considered to be an almost ideal quantum two-level system at low temperatures. Magnetocaloric properties of KTm(MoO4)(2) single crystals were investigated using specific heat and magnetization measurement in the magnetic field applied along the easy axis. Large conventional magnetocaloric effect (-Delta S-M approximate to 10.3 J/(kg K)) was observed in the magnetic field of 5 T in a relatively wide temperature interval. The isothermal magnetic entropy change of about 8 J/(kgK) has been achieved already for the magnetic field of 2 T. Temperature dependence of the isothermal entropy change under different magnetic fields is in good agreement with theoretical predictions for a quantum two-level system with Delta approximate to 2.82 cm(-1). Investigation of magnetocaloric properties of KTm(MoO4)(2) suggests that the studied system can be considered as a good material for magnetic cooling at low temperatures.

Název v anglickém jazyce

Experimental study of magnetocaloric effect in the two-level quantum system KTm(MoO4)(2)

Popis výsledku anglicky

KTm(MoO4)(2) belongs to the family of binary alkaline rare-earth molybdates. This compound can be considered to be an almost ideal quantum two-level system at low temperatures. Magnetocaloric properties of KTm(MoO4)(2) single crystals were investigated using specific heat and magnetization measurement in the magnetic field applied along the easy axis. Large conventional magnetocaloric effect (-Delta S-M approximate to 10.3 J/(kg K)) was observed in the magnetic field of 5 T in a relatively wide temperature interval. The isothermal magnetic entropy change of about 8 J/(kgK) has been achieved already for the magnetic field of 2 T. Temperature dependence of the isothermal entropy change under different magnetic fields is in good agreement with theoretical predictions for a quantum two-level system with Delta approximate to 2.82 cm(-1). Investigation of magnetocaloric properties of KTm(MoO4)(2) suggests that the studied system can be considered as a good material for magnetic cooling at low temperatures.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LM2011025" target="_blank" >LM2011025: LMNT - Laboratoře magnetizmu a nízkých teplot - provoz a rozvoj národní výzkumné infrastruktury</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica B: Condensed Matter

ISSN

0921-4526

e-ISSN

—

Svazek periodika

536

Číslo periodika v rámci svazku

květen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

450-453

Kód UT WoS článku

000431075600103

EID výsledku v databázi Scopus

2-s2.0-85029802237