Magnetic anisotropy of single-domain particles
The competition between uniaxial and cubic magnetic anisotropies of single-domain particles is analyzed theoretically. As long as K 1 c / K 1 u < 5 ( K 1 c and K 1 u are the first constants of the crystallographic and uniaxial anisotropies), the value of K 1 u noticeably affects coercive force H...
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| Veröffentlicht in: | Technical physics 2014, Vol.59 (1), p.6-15 |
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| creator | Petinov, V. I. |
| description | The competition between uniaxial and cubic magnetic anisotropies of single-domain particles is analyzed theoretically. As long as
K
1
c
/
K
1
u
< 5 (
K
1
c
and
K
1
u
are the first constants of the crystallographic and uniaxial anisotropies), the value of
K
1
u
noticeably affects coercive force
H
c
and relative residual magnetization
j
r
of particle ensembles. If the uniaxial anisotropy direction coincides with crystallographic axis 〈111〉 or 〈100〉, the dependences of
H
c
and
j
r
on ratio
K
1
c
/
K
1
u
have a minimum. The competition between the induced uniaxial anisotropy and cubic anisotropy was detected experimentally when the effect of temperature
T
on the
H
c
(
T
) and
j
r
(
T
) dependences for single-domain spherical particles of magnetic 3
d
alloys and γ-Fe
2
O
3
oxide was investigated. For all single-domain particles studied here, the effect of crystallographic anisotropy on
H
c
and
j
r
is manifested at low temperatures, while uniaxial anisotropy plays a decisive role in the temperature range
T
> 250 K. The effect of second constant
K
2
on
H
c
and
j
r
of ensembles of single-domain particles with uniaxial and cubic anisotropies is investigated theoretically. It is shown that the value of
K
2
may substantially change the value of
H
c
for a particle ensemble, preserving the value of
j
r
unchanged. |
| doi_str_mv | 10.1134/S1063784214010137 |
| format | Article |
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K
1
c
/
K
1
u
< 5 (
K
1
c
and
K
1
u
are the first constants of the crystallographic and uniaxial anisotropies), the value of
K
1
u
noticeably affects coercive force
H
c
and relative residual magnetization
j
r
of particle ensembles. If the uniaxial anisotropy direction coincides with crystallographic axis 〈111〉 or 〈100〉, the dependences of
H
c
and
j
r
on ratio
K
1
c
/
K
1
u
have a minimum. The competition between the induced uniaxial anisotropy and cubic anisotropy was detected experimentally when the effect of temperature
T
on the
H
c
(
T
) and
j
r
(
T
) dependences for single-domain spherical particles of magnetic 3
d
alloys and γ-Fe
2
O
3
oxide was investigated. For all single-domain particles studied here, the effect of crystallographic anisotropy on
H
c
and
j
r
is manifested at low temperatures, while uniaxial anisotropy plays a decisive role in the temperature range
T
> 250 K. The effect of second constant
K
2
on
H
c
and
j
r
of ensembles of single-domain particles with uniaxial and cubic anisotropies is investigated theoretically. It is shown that the value of
K
2
may substantially change the value of
H
c
for a particle ensemble, preserving the value of
j
r
unchanged.</description><identifier>ISSN: 1063-7842</identifier><identifier>EISSN: 1090-6525</identifier><identifier>DOI: 10.1134/S1063784214010137</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Analysis ; Anisotropy ; Classical and Continuum Physics ; Magnetization ; Physics ; Physics and Astronomy ; Theoretical and Mathematical Physics</subject><ispartof>Technical physics, 2014, Vol.59 (1), p.6-15</ispartof><rights>Pleiades Publishing, Ltd. 2014</rights><rights>COPYRIGHT 2014 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-f8101e1ac9c971d73babb663b483d24a9a7519ef45bb56811d5494b447cd25133</citedby><cites>FETCH-LOGICAL-c327t-f8101e1ac9c971d73babb663b483d24a9a7519ef45bb56811d5494b447cd25133</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/S1063784214010137$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063784214010137$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27928,27929,41492,42561,51323</link.rule.ids></links><search><creatorcontrib>Petinov, V. I.</creatorcontrib><title>Magnetic anisotropy of single-domain particles</title><title>Technical physics</title><addtitle>Tech. Phys</addtitle><description>The competition between uniaxial and cubic magnetic anisotropies of single-domain particles is analyzed theoretically. As long as
K
1
c
/
K
1
u
< 5 (
K
1
c
and
K
1
u
are the first constants of the crystallographic and uniaxial anisotropies), the value of
K
1
u
noticeably affects coercive force
H
c
and relative residual magnetization
j
r
of particle ensembles. If the uniaxial anisotropy direction coincides with crystallographic axis 〈111〉 or 〈100〉, the dependences of
H
c
and
j
r
on ratio
K
1
c
/
K
1
u
have a minimum. The competition between the induced uniaxial anisotropy and cubic anisotropy was detected experimentally when the effect of temperature
T
on the
H
c
(
T
) and
j
r
(
T
) dependences for single-domain spherical particles of magnetic 3
d
alloys and γ-Fe
2
O
3
oxide was investigated. For all single-domain particles studied here, the effect of crystallographic anisotropy on
H
c
and
j
r
is manifested at low temperatures, while uniaxial anisotropy plays a decisive role in the temperature range
T
> 250 K. The effect of second constant
K
2
on
H
c
and
j
r
of ensembles of single-domain particles with uniaxial and cubic anisotropies is investigated theoretically. It is shown that the value of
K
2
may substantially change the value of
H
c
for a particle ensemble, preserving the value of
j
r
unchanged.</description><subject>Analysis</subject><subject>Anisotropy</subject><subject>Classical and Continuum Physics</subject><subject>Magnetization</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Theoretical and Mathematical Physics</subject><issn>1063-7842</issn><issn>1090-6525</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-AG_9A62Z5qs9LotfsOJBPZckTUqWNilJPey_N2W9CTKHGWbeZ3hnELoHXAEQ-vABmBPR0BooBgxEXKAN4BaXnNXscq05Kdf5NbpJ6YgxQMP4BlVvcvBmcbqQ3qWwxDCfimCL5PwwmrIPk3S-mGXMktGkW3Rl5ZjM3W_eoq-nx8_9S3l4f37d7w6lJrVYSttkDwakbnUroBdESaU4J4o2pK-pbKVg0BpLmVKMNwA9oy1VlArd1wwI2aLqvHeQo-mct9mZ1Dl6MzkdvLEu93eEE94IECwDcAZ0DClFY7s5uknGUwe4Wz_U_flQZuozk7LWDyZ2x_Adfb7rH-gHh-VmWA</recordid><startdate>2014</startdate><enddate>2014</enddate><creator>Petinov, V. I.</creator><general>Springer US</general><general>Springer</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2014</creationdate><title>Magnetic anisotropy of single-domain particles</title><author>Petinov, V. I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-f8101e1ac9c971d73babb663b483d24a9a7519ef45bb56811d5494b447cd25133</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Analysis</topic><topic>Anisotropy</topic><topic>Classical and Continuum Physics</topic><topic>Magnetization</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Theoretical and Mathematical Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Petinov, V. I.</creatorcontrib><collection>CrossRef</collection><jtitle>Technical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Petinov, V. I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic anisotropy of single-domain particles</atitle><jtitle>Technical physics</jtitle><stitle>Tech. Phys</stitle><date>2014</date><risdate>2014</risdate><volume>59</volume><issue>1</issue><spage>6</spage><epage>15</epage><pages>6-15</pages><issn>1063-7842</issn><eissn>1090-6525</eissn><abstract>The competition between uniaxial and cubic magnetic anisotropies of single-domain particles is analyzed theoretically. As long as
K
1
c
/
K
1
u
< 5 (
K
1
c
and
K
1
u
are the first constants of the crystallographic and uniaxial anisotropies), the value of
K
1
u
noticeably affects coercive force
H
c
and relative residual magnetization
j
r
of particle ensembles. If the uniaxial anisotropy direction coincides with crystallographic axis 〈111〉 or 〈100〉, the dependences of
H
c
and
j
r
on ratio
K
1
c
/
K
1
u
have a minimum. The competition between the induced uniaxial anisotropy and cubic anisotropy was detected experimentally when the effect of temperature
T
on the
H
c
(
T
) and
j
r
(
T
) dependences for single-domain spherical particles of magnetic 3
d
alloys and γ-Fe
2
O
3
oxide was investigated. For all single-domain particles studied here, the effect of crystallographic anisotropy on
H
c
and
j
r
is manifested at low temperatures, while uniaxial anisotropy plays a decisive role in the temperature range
T
> 250 K. The effect of second constant
K
2
on
H
c
and
j
r
of ensembles of single-domain particles with uniaxial and cubic anisotropies is investigated theoretically. It is shown that the value of
K
2
may substantially change the value of
H
c
for a particle ensemble, preserving the value of
j
r
unchanged.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1134/S1063784214010137</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1063-7842 |
| ispartof | Technical physics, 2014, Vol.59 (1), p.6-15 |
| issn | 1063-7842 1090-6525 |
| language | eng |
| recordid | cdi_gale_infotracacademiconefile_A363687175 |
| source | SpringerNature Journals |
| subjects | Analysis Anisotropy Classical and Continuum Physics Magnetization Physics Physics and Astronomy Theoretical and Mathematical Physics |
| title | Magnetic anisotropy of single-domain particles |
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