| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 168 0 |
 SM ISO690:2012EFTHIMIOPOULOS, Ilias, YARESKO, Alexander Ya, TSURKAN, Vladimir, DEISENHOFER, Joachim, LOIDL, Alois, PARK, Changyong. Multiple pressure-induced transitions in HgCr2S4. In: Applied Physics Letters, 2013, vol. 103, p. 0. ISSN 0003-6951. DOI: https://doi.org/10.1063/1.4830225 |
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  Applied Physics Letters |
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| Volumul 103 / 2013 / ISSN 0003-6951 /ISSNe 1077-3118 | |
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| DOI:https://doi.org/10.1063/1.4830225 | |
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We have performed combined experimental and theoretical high-pressure investigations on magnetoelectric HgCr2S4 spinel. Overall, HgCr2S4 exhibits three reversible structural transitions under pressure: the starting Fd-3m phase adopts a tetragonal I41/amd structure at 20 GPa, an orthorhombic distortion occurs above 26 GPa, whereas a third structural transition takes place beyond 37 GPa. During the Fd-3m to I41/amd structural transition, HgCr2S4 experiences a volume change of 4% which is unexpected from space group symmetry considerations alone. Furthermore, the Fd-3m to I41/amd transformation appears to be concomitant with an insulator-to-metal transition whereas compression of HgCr2S4 leads to a gradual suppression of its ferromagnetism. |
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| Cuvinte-cheie Insulator-to-metal transitions, Orthorhombic distortion, Pressure-induced transitions, Space-group symmetry, Structural transitions, Volume change |
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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Efthimiopoulos, I.</dc:creator> <dc:creator>Yaresko, A.</dc:creator> <dc:creator>Ţurcan, V.V.</dc:creator> <dc:creator>Deisenhofer, J.</dc:creator> <dc:creator>Loidl, A.</dc:creator> <dc:creator>Park, C.</dc:creator> <dc:date>2013-11-11</dc:date> <dc:description xml:lang='en'><p>We have performed combined experimental and theoretical high-pressure investigations on magnetoelectric HgCr<sub>2</sub>S<sub>4</sub> spinel. Overall, HgCr<sub>2</sub>S<sub>4</sub> exhibits three reversible structural transitions under pressure: the starting Fd-3m phase adopts a tetragonal I4<sub>1</sub>/amd structure at 20 GPa, an orthorhombic distortion occurs above 26 GPa, whereas a third structural transition takes place beyond 37 GPa. During the Fd-3m to I4<sub>1</sub>/amd structural transition, HgCr<sub>2</sub>S<sub>4</sub> experiences a volume change of 4% which is unexpected from space group symmetry considerations alone. Furthermore, the Fd-3m to I4<sub>1</sub>/amd transformation appears to be concomitant with an insulator-to-metal transition whereas compression of HgCr<sub>2</sub>S<sub>4</sub> leads to a gradual suppression of its ferromagnetism.</p></dc:description> <dc:identifier>10.1063/1.4830225</dc:identifier> <dc:source>Applied Physics Letters () 0-0</dc:source> <dc:subject>Insulator-to-metal transitions</dc:subject> <dc:subject>Orthorhombic distortion</dc:subject> <dc:subject>Pressure-induced transitions</dc:subject> <dc:subject>Space-group symmetry</dc:subject> <dc:subject>Structural transitions</dc:subject> <dc:subject>Volume change</dc:subject> <dc:title>Multiple pressure-induced transitions in HgCr2S4</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
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