Paramagnetic Mn Antisite Defects in Nanoceramics of Aluminum–Magnesium Spinel
The effect of structure and size parameters on the formation of intrinsic and impurity paramagnetic centers in nanoceramics of aluminum–magnesium spinel is studied. The studied samples (grain size ~30 nm) are obtained by thermobaric synthesis. Microcrystalline ceramics and MgAl 2 O 4 single crystal...
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| Veröffentlicht in: | Physics of the solid state 2020, Vol.62 (1), p.137-143 |
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| container_title | Physics of the solid state |
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| creator | Zatsepin, A. F. Kiryakov, A. N. Baytimirov, D. R. Dyachkova, T. V. Tyutyunnik, A. P. Zainulin, Yu. G. |
| description | The effect of structure and size parameters on the formation of intrinsic and impurity paramagnetic centers in nanoceramics of aluminum–magnesium spinel is studied. The studied samples (grain size ~30 nm) are obtained by thermobaric synthesis. Microcrystalline ceramics and MgAl
2
O
4
single crystal are used as the reference samples. Characteristic paramagnetic centers of Mn
2+
(hyperfine structure constant (HFS)
A
= 82 G) are present in both single crystal and microceramics. In the studied samples of nanoceramics in the initial state, both impurity Mn
2+
and intrinsic F
+
centers exist. Unlike the nanoceramics, the centers of F
+
type in the reference sample appear only after the irradiation with accelerated electrons (130 keV). The parameters of Mn
2+
centers in nanoceramics significantly differ on that in microceramics and single crystal. EPR signal of Mn
2+
centers in nanoceramics is characterized by two anomalous constant HFS (
A
1
= 91
.
21 G,
A
2
= 87
.
83 G) caused by two types of octahedrally coordinated manganese ions ([Mn
2+
]
antisite defects). The features of spectral parameters of manganese centers correlate with a decrease in the cell parameter of MgAl
2
O
4
in the nanostructural state. The observed effects are interpreted based on the assumed scheme of [Mn
2+
]
charge compensation by the aluminum antisite defect and F
+
center. |
| doi_str_mv | 10.1134/S1063783420010370 |
| format | Article |
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2
O
4
single crystal are used as the reference samples. Characteristic paramagnetic centers of Mn
2+
(hyperfine structure constant (HFS)
A
= 82 G) are present in both single crystal and microceramics. In the studied samples of nanoceramics in the initial state, both impurity Mn
2+
and intrinsic F
+
centers exist. Unlike the nanoceramics, the centers of F
+
type in the reference sample appear only after the irradiation with accelerated electrons (130 keV). The parameters of Mn
2+
centers in nanoceramics significantly differ on that in microceramics and single crystal. EPR signal of Mn
2+
centers in nanoceramics is characterized by two anomalous constant HFS (
A
1
= 91
.
21 G,
A
2
= 87
.
83 G) caused by two types of octahedrally coordinated manganese ions ([Mn
2+
]
antisite defects). The features of spectral parameters of manganese centers correlate with a decrease in the cell parameter of MgAl
2
O
4
in the nanostructural state. The observed effects are interpreted based on the assumed scheme of [Mn
2+
]
charge compensation by the aluminum antisite defect and F
+
center.</description><identifier>ISSN: 1063-7834</identifier><identifier>EISSN: 1090-6460</identifier><identifier>DOI: 10.1134/S1063783420010370</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Aluminum ; Antisite defects ; Ceramic materials ; Ceramics ; Crystal defects ; Dielectrics ; Grain size ; Hyperfine structure ; Impurities ; Magnesium ; Manganese ions ; Parameters ; Physics ; Physics and Astronomy ; Single crystals ; Solid State Physics ; Spinel ; Spinel group</subject><ispartof>Physics of the solid state, 2020, Vol.62 (1), p.137-143</ispartof><rights>Pleiades Publishing, Ltd. 2020</rights><rights>COPYRIGHT 2020 Springer</rights><rights>2020© Pleiades Publishing, Ltd. 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-321091558f19266951b90b3cd57b44b542052fcba1f2b7cb719debcb9096da743</citedby><cites>FETCH-LOGICAL-c389t-321091558f19266951b90b3cd57b44b542052fcba1f2b7cb719debcb9096da743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063783420010370$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063783420010370$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Zatsepin, A. F.</creatorcontrib><creatorcontrib>Kiryakov, A. N.</creatorcontrib><creatorcontrib>Baytimirov, D. R.</creatorcontrib><creatorcontrib>Dyachkova, T. V.</creatorcontrib><creatorcontrib>Tyutyunnik, A. P.</creatorcontrib><creatorcontrib>Zainulin, Yu. G.</creatorcontrib><title>Paramagnetic Mn Antisite Defects in Nanoceramics of Aluminum–Magnesium Spinel</title><title>Physics of the solid state</title><addtitle>Phys. Solid State</addtitle><description>The effect of structure and size parameters on the formation of intrinsic and impurity paramagnetic centers in nanoceramics of aluminum–magnesium spinel is studied. The studied samples (grain size ~30 nm) are obtained by thermobaric synthesis. Microcrystalline ceramics and MgAl
2
O
4
single crystal are used as the reference samples. Characteristic paramagnetic centers of Mn
2+
(hyperfine structure constant (HFS)
A
= 82 G) are present in both single crystal and microceramics. In the studied samples of nanoceramics in the initial state, both impurity Mn
2+
and intrinsic F
+
centers exist. Unlike the nanoceramics, the centers of F
+
type in the reference sample appear only after the irradiation with accelerated electrons (130 keV). The parameters of Mn
2+
centers in nanoceramics significantly differ on that in microceramics and single crystal. EPR signal of Mn
2+
centers in nanoceramics is characterized by two anomalous constant HFS (
A
1
= 91
.
21 G,
A
2
= 87
.
83 G) caused by two types of octahedrally coordinated manganese ions ([Mn
2+
]
antisite defects). The features of spectral parameters of manganese centers correlate with a decrease in the cell parameter of MgAl
2
O
4
in the nanostructural state. The observed effects are interpreted based on the assumed scheme of [Mn
2+
]
charge compensation by the aluminum antisite defect and F
+
center.</description><subject>Aluminum</subject><subject>Antisite defects</subject><subject>Ceramic materials</subject><subject>Ceramics</subject><subject>Crystal defects</subject><subject>Dielectrics</subject><subject>Grain size</subject><subject>Hyperfine structure</subject><subject>Impurities</subject><subject>Magnesium</subject><subject>Manganese ions</subject><subject>Parameters</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Single crystals</subject><subject>Solid State Physics</subject><subject>Spinel</subject><subject>Spinel group</subject><issn>1063-7834</issn><issn>1090-6460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kd9KwzAUh4soOKcP4F3BKy86k6ZJm8sy_w02J06vS5omJaNNZ5KC3vkOvqFPYkoFGSK5SEi-7-R3OEFwDsEMQpRcbSAgKM1QEgMAAUrBQTCBgIKIJAQcDmeCouH9ODixdushCDGdBOtHZljLai2c4uFKh7l2yionwmshBXc2VDp8YLrjwnOK27CTYd70rdJ9-_XxuRpUq_o23OyUFs1pcCRZY8XZzz4NXm5vnuf30XJ9t5jny4ijjLoIxT4cxDiTkMaEUAxLCkrEK5yWSVJi3waOJS8ZlHGZ8jKFtBIl9xAlFUsTNA0uxro70732wrpi2_VG-y-LGBGMEphQ6qnZSNWsEYXSsnOGcb8q4XvptJDK3-fEJ4kzgLAXLvcEzzjx5mrWW1ssNk_7LBxZbjprjZDFzqiWmfcCgmIYSvFnKN6JR8d6VtfC_Mb-X_oGcOeMXQ</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Zatsepin, A. F.</creator><creator>Kiryakov, A. N.</creator><creator>Baytimirov, D. R.</creator><creator>Dyachkova, T. V.</creator><creator>Tyutyunnik, A. P.</creator><creator>Zainulin, Yu. G.</creator><general>Pleiades Publishing</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope></search><sort><creationdate>2020</creationdate><title>Paramagnetic Mn Antisite Defects in Nanoceramics of Aluminum–Magnesium Spinel</title><author>Zatsepin, A. F. ; Kiryakov, A. N. ; Baytimirov, D. R. ; Dyachkova, T. V. ; Tyutyunnik, A. P. ; Zainulin, Yu. G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-321091558f19266951b90b3cd57b44b542052fcba1f2b7cb719debcb9096da743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Aluminum</topic><topic>Antisite defects</topic><topic>Ceramic materials</topic><topic>Ceramics</topic><topic>Crystal defects</topic><topic>Dielectrics</topic><topic>Grain size</topic><topic>Hyperfine structure</topic><topic>Impurities</topic><topic>Magnesium</topic><topic>Manganese ions</topic><topic>Parameters</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Single crystals</topic><topic>Solid State Physics</topic><topic>Spinel</topic><topic>Spinel group</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zatsepin, A. F.</creatorcontrib><creatorcontrib>Kiryakov, A. N.</creatorcontrib><creatorcontrib>Baytimirov, D. R.</creatorcontrib><creatorcontrib>Dyachkova, T. V.</creatorcontrib><creatorcontrib>Tyutyunnik, A. P.</creatorcontrib><creatorcontrib>Zainulin, Yu. G.</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Science</collection><jtitle>Physics of the solid state</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zatsepin, A. F.</au><au>Kiryakov, A. N.</au><au>Baytimirov, D. R.</au><au>Dyachkova, T. V.</au><au>Tyutyunnik, A. P.</au><au>Zainulin, Yu. G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Paramagnetic Mn Antisite Defects in Nanoceramics of Aluminum–Magnesium Spinel</atitle><jtitle>Physics of the solid state</jtitle><stitle>Phys. Solid State</stitle><date>2020</date><risdate>2020</risdate><volume>62</volume><issue>1</issue><spage>137</spage><epage>143</epage><pages>137-143</pages><issn>1063-7834</issn><eissn>1090-6460</eissn><abstract>The effect of structure and size parameters on the formation of intrinsic and impurity paramagnetic centers in nanoceramics of aluminum–magnesium spinel is studied. The studied samples (grain size ~30 nm) are obtained by thermobaric synthesis. Microcrystalline ceramics and MgAl
2
O
4
single crystal are used as the reference samples. Characteristic paramagnetic centers of Mn
2+
(hyperfine structure constant (HFS)
A
= 82 G) are present in both single crystal and microceramics. In the studied samples of nanoceramics in the initial state, both impurity Mn
2+
and intrinsic F
+
centers exist. Unlike the nanoceramics, the centers of F
+
type in the reference sample appear only after the irradiation with accelerated electrons (130 keV). The parameters of Mn
2+
centers in nanoceramics significantly differ on that in microceramics and single crystal. EPR signal of Mn
2+
centers in nanoceramics is characterized by two anomalous constant HFS (
A
1
= 91
.
21 G,
A
2
= 87
.
83 G) caused by two types of octahedrally coordinated manganese ions ([Mn
2+
]
antisite defects). The features of spectral parameters of manganese centers correlate with a decrease in the cell parameter of MgAl
2
O
4
in the nanostructural state. The observed effects are interpreted based on the assumed scheme of [Mn
2+
]
charge compensation by the aluminum antisite defect and F
+
center.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063783420010370</doi><tpages>7</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Aluminum Antisite defects Ceramic materials Ceramics Crystal defects Dielectrics Grain size Hyperfine structure Impurities Magnesium Manganese ions Parameters Physics Physics and Astronomy Single crystals Solid State Physics Spinel Spinel group |
| title | Paramagnetic Mn Antisite Defects in Nanoceramics of Aluminum–Magnesium Spinel |
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