Synthesis and Characterization of the Double Perovskite Y<sub>2</sub>MgRuO<sub>6</sub>
A new double perovskite compound with nominal composition Y<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></in...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
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| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/9/1365 |
| Summary: | A new double perovskite compound with nominal composition Y<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>MgRuO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>6</mn></msub></semantics></math></inline-formula> is synthesized by the floating zone technique. X-ray diffraction measurements reveal a monoclinic crystal structure with space group <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>P</mi><msub><mn>2</mn><mn>1</mn></msub><mo>/</mo><mi>n</mi></mrow></semantics></math></inline-formula> and monoclinic angle <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>β</mi></semantics></math></inline-formula> = 90.178(1)<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula> as crystallographically expected for a double perovskite. A composition of Y<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>1.880</mn><mo>(</mo><mn>8</mn><mo>)</mo></mrow></msub></semantics></math></inline-formula>Mg<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>0.953</mn><mo>(</mo><mn>4</mn><mo>)</mo></mrow></msub></semantics></math></inline-formula>Ru<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>1.047</mn><mo>(</mo><mn>4</mn><mo>)</mo></mrow></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>6</mn><mo>−</mo><mi>δ</mi></mrow></msub></semantics></math></inline-formula> is revealed by our single crystal X-ray diffraction measurement. The magnetic susceptibility of this compound does not show indications of magnetic ordering down to the lowest temperature. A Curie–Weiss fit for the paramagnetic part above 300 K yields an effective moment that indicates an S = 1 Ru<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mn>4</mn><mo>+</mo></mrow></msup></semantics></math></inline-formula> state. We attribute the occurrence of the S = 1 state and the lack of magnetic order to the presence of the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>B</mi><mo>/</mo><msup><mi>B</mi><mo>′</mo></msup></mrow></semantics></math></inline-formula>-site disorder. |
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| ISSN: | 2073-4352 |