| Autor: |
Papadopoulos, Konstantinos, Forslund, Ola Kenji, Nocerino, Elisabetta, Johansson, Fredrik O. L., Simutis, Gediminas, Matsubara, Nami, Morris, Gerald, Hitti, Bassam, Arseneau, Donald, Orain, Jean-Christophe, Pomjakushin, Vladimir, Svedlindh, Peter, Andreica, Daniel, Börjesson, Lars, Sugiyama, Jun, Månsson, Martin, Sassa, Yasmine |
| Rok vydání: |
2021 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.106.214410 |
| Popis: |
The magnetism of double perovskites is a complex phenomenon, determined from intra- or interatomic magnetic moment interactions, and strongly influenced by geometry. We take advantage of the complementary length and time scales of the muon spin rotation, relaxation and resonance ($\mu^+$SR) microscopic technique and bulk AC/DC magnetic susceptibility measurements to study the magnetic phases of the LaCaNiReO$_6$ double perovskite. As a result we are able to discern and report a newly found dynamic phase transition and the formation of magnetic domains below and above the known magnetic transition of this compound at T$_N$ = 103 K. $\mu^+$SR, serving as a local probe at crystallographic interstitial sites, reveals a transition from a metastable ferrimagnetic ordering below T = 103 K to a stable one below T = 30 K. The fast and slow collective dynamic state of this system are investigated. Between 103 K < T < 230 K, the following two magnetic environments appear, a dense spin region and a static-dilute spin region. The paramagnetic state is obtained only above T > 270 K. An evolution of the interaction between Ni and Re magnetic sublattices in this geometrically frustrated fcc perovskite structure, is revealed as a function of temperature and magnetic field, through the critical behaviour and thermal evolution of microscopic and macroscopic physical quantities. |
| Databáze: |
arXiv |
| Externí odkaz: |
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