IRIS publication 17688936
Magnetic Properties of Single Crystalline Ge1-xMnx Nanowires. Ieee Transactions on Magnetics
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TY - JOUR - Kazakova, O; van der Meulen, MI; Petkov, N; Holmes, JD - 2009 - October - IEEE Transactions On Magnetics - Magnetic Properties of Single Crystalline Ge1-xMnx Nanowires. Ieee Transactions on Magnetics - Validated - () - 45 - 10 - 4085 - 4088 - A detailed study of the magnetic properties of single crystalline Ge1-xMnx nanowires is presented. Free-standing nanowires with an averaged diameter of 30-180 nm and several microns in length were grown by a supercritical fluid-liquid-solid method. The absence of various Ge-Mn crystallographic precipitates and oxide shells around the wire was confirmed by a number of structural techniques. Magnetization measurements demonstrate a clear ferromagnetic ordering at room temperature. However, the net magnetic moment is relatively low, with the maximum measured saturation moment per Mn atom in the order of 0.7 mu(B) at T = 300 K. The weak room-temperature ferromagnetism most likely originates from areas rich in diluted Mn atoms. The magnetic properties of Ge1-xMnx nanowires can be qualitatively explained by propagation and the merge of bound magnetic polarons, which seed initially in areas with the largest local concentration of dispersed Mn ions. - 0018-9464 DA - 2009/10 ER -
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@article{V17688936, = {Kazakova, O and van der Meulen, MI and Petkov, N and Holmes, JD}, = {2009}, = {October}, = {IEEE Transactions On Magnetics}, = {Magnetic Properties of Single Crystalline Ge1-xMnx Nanowires. Ieee Transactions on Magnetics}, = {Validated}, = {()}, = {45}, = {10}, pages = {4085--4088}, = {{A detailed study of the magnetic properties of single crystalline Ge1-xMnx nanowires is presented. Free-standing nanowires with an averaged diameter of 30-180 nm and several microns in length were grown by a supercritical fluid-liquid-solid method. The absence of various Ge-Mn crystallographic precipitates and oxide shells around the wire was confirmed by a number of structural techniques. Magnetization measurements demonstrate a clear ferromagnetic ordering at room temperature. However, the net magnetic moment is relatively low, with the maximum measured saturation moment per Mn atom in the order of 0.7 mu(B) at T = 300 K. The weak room-temperature ferromagnetism most likely originates from areas rich in diluted Mn atoms. The magnetic properties of Ge1-xMnx nanowires can be qualitatively explained by propagation and the merge of bound magnetic polarons, which seed initially in areas with the largest local concentration of dispersed Mn ions.}}, issn = {0018-9464}, source = {IRIS} }
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AUTHORS | Kazakova, O; van der Meulen, MI; Petkov, N; Holmes, JD | ||
YEAR | 2009 | ||
MONTH | October | ||
JOURNAL_CODE | IEEE Transactions On Magnetics | ||
TITLE | Magnetic Properties of Single Crystalline Ge1-xMnx Nanowires. Ieee Transactions on Magnetics | ||
STATUS | Validated | ||
TIMES_CITED | () | ||
SEARCH_KEYWORD | |||
VOLUME | 45 | ||
ISSUE | 10 | ||
START_PAGE | 4085 | ||
END_PAGE | 4088 | ||
ABSTRACT | A detailed study of the magnetic properties of single crystalline Ge1-xMnx nanowires is presented. Free-standing nanowires with an averaged diameter of 30-180 nm and several microns in length were grown by a supercritical fluid-liquid-solid method. The absence of various Ge-Mn crystallographic precipitates and oxide shells around the wire was confirmed by a number of structural techniques. Magnetization measurements demonstrate a clear ferromagnetic ordering at room temperature. However, the net magnetic moment is relatively low, with the maximum measured saturation moment per Mn atom in the order of 0.7 mu(B) at T = 300 K. The weak room-temperature ferromagnetism most likely originates from areas rich in diluted Mn atoms. The magnetic properties of Ge1-xMnx nanowires can be qualitatively explained by propagation and the merge of bound magnetic polarons, which seed initially in areas with the largest local concentration of dispersed Mn ions. | ||
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ISBN_ISSN | 0018-9464 | ||
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