EP1866940A1 - Ferro- oder ferrimagnetische schicht, verfahren zu ihrer herstellung und ihre verwendung - Google Patents
Ferro- oder ferrimagnetische schicht, verfahren zu ihrer herstellung und ihre verwendungInfo
- Publication number
- EP1866940A1 EP1866940A1 EP06723734A EP06723734A EP1866940A1 EP 1866940 A1 EP1866940 A1 EP 1866940A1 EP 06723734 A EP06723734 A EP 06723734A EP 06723734 A EP06723734 A EP 06723734A EP 1866940 A1 EP1866940 A1 EP 1866940A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- slot
- layer according
- ferromagnetic
- ferrimagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/32—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film
- H01F41/34—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film in patterns, e.g. by lithography
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
- H01F10/14—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys containing iron or nickel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/18—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates by cathode sputtering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12361—All metal or with adjacent metals having aperture or cut
Definitions
- Ferro- or ferrimagnetic layer process for their preparation and their use
- the invention relates to a thin ferromagnetic or ferrimagnetic layer, process for their preparation and their use.
- Passive or active electronic components may have ferromagnetic or ferrimagnetic thin film components that cause an essential function of the device.
- ferromagnetic or ferrimagnetic thin film components that cause an essential function of the device.
- the domain structure in thin layers due to spontaneous magnetization depends primarily on the minimization of the stray field. Therefore, in many cases, especially if the material properties over the layer are not constant, the domain structure is not adjustable.
- the adjustability of the domain structure and its spatial and temporal stabilization is a fundamental prerequisite for magnetoelectronic or spintronic components, in particular in the field of high-frequency technology, sensor technology, storage media and electronics.
- the idea underlying the invention consists in exerting an influence on the setting of the domain structure by means of one or more oblong slots which are introduced into a ferromagnetic or ferrimagnetic thin layer.
- This adjustable domain structure is the key to the magnetization dependent function of a device comprising a layer according to the invention.
- Such a slotted layer allows for a linear course of the magnetization due to the substantial prevention of Domanenwandschulen.
- a layer without slots forms a Domanen für Integrated Device (EDG)
- Domanen designed with extended Domanenwanden and large Domanen Kunststoffen with ineffective lying magnetization direction.
- the area of the aligned magnetization is significantly increased and the volume of the domain wall is reduced, and the domain wall movement is reduced. The targeted orientation of the magnetization of domains is thus made possible.
- a layer of a ferromagnetic or ferrimagnetic material according to the invention is directly on a substrate or via one or more additional electrically insulating, semiconductive or conductive non-ferromagnetic or ferrimagnetic or other ferromagnetic or ferrimagnetic Interlayers applied to a substrate.
- the thickness of the layer is preferably between 10 niti and 10 ⁇ r ⁇ .
- a layer according to the invention further comprises one or more slots, which are elongated and therefore have a defined longitudinal axis.
- the depth of the slot or slots corresponds to the respective thickness of the layer and its width is in each case greater than the exchange length of the ferromagnetic or ferrimagnetic material, which is usually in the range between 10 nm to 100 nm.
- No slit is placed so that it touches one side (edge) of the layer, thus possibly dividing the layer into several parts.
- no current or voltage-carrying conductor tracks are passed through the slot.
- the slots preferably have a length corresponding to the geometry of the layer, e.g. adapted to rectangles, squares, bands, triangles or rings.
- the sides of the layer form a rectangle and the longitudinal axis of the at least one slot is substantially parallel to two opposite sides of the rectangle.
- the length of each slot in this case is preferably between 0.1 and 0.85 times, more preferably between 0.2 and 0.75 times, one side of the layer substantially parallel to the longitudinal axis of the layer concerned slot runs.
- the distance between two adjacent slots in a given geometry depends on the material and thickness of the layer and has an upper limit due to the formation of additional domains between these two slots and down through the enlargement of the inactive volume occupied by additional slots. Thus, it is preferable to choose a distance that is optimum between reducing the transverse magnetization through more slots while simultaneously losing surface area on the layer through more slots.
- the layer thus applied is structured by microstructure techniques in rich, and hereby one or more slots are introduced.
- common methods such. Ion beam etching, plasma jet etching, reactive ion etching, wet-chemical etching or mechanical removal in question.
- the structures thus produced may have any, in particular a square, rectangular, round, elliptical or annular geometry.
- the desired Domanen Vienna adjusts itself when using suitable slot geometries either spontaneously, so without additional heat treatment.
- an induced anisotropy is impressed by a subsequent heat treatment of the layer with or without an external magnetic field reinforced.
- the heat treatment of the layer as well as the external magnetic field during the heat treatment for impressing a uniaxial anisotropy can be dispensed with.
- the present invention thus enables the targeted setting of magnetic domains m ferro- or ferrimagnetician layers with any outer geometries, with a high proportion of targeted areas is generated within the layer.
- the alignment of the domains in any geometric Dunn Anlagenk- tures is possible. This makes it possible to selectively adjust the permeability and the magnetization behavior of magnetic layer structures via the domain structure.
- Inventive films are suitable for use in magneto-electronic and spintronic components, in particular in the areas of radio frequency technology, sensors, storage devices and Elect ⁇ ronik.
- FIG. 1 Schematic representation of the magnetization of a ferromagnetic or ferrimagnetic layer a) after spontaneous magnetization b) and subsequent heat treatment in the external magnetic field in each case without slot according to the invention; c) after spontaneous magnetization with slot according to the invention.
- Fig. 3 Schematic representation of various geometries of the arrangement of slots according to the invention: a) uniaxial arrangement; b) triangular arrangement, c) annular arrangement.
- FIG. 4 Schematic representation of the example of an arrangement of different slots according to the invention.
- a flat thin layer 10 of the ferromagnetic material FeCoTaN is deposited on a substrate with square lateral dimensions of 20 ⁇ m x 20 ⁇ m.
- the thickness of the layer 10 is 100 nm, which is 200 times less than the edge length.
- a layer 10 spontaneously forms a domain structure, which is shown schematically in Fig. Ia) with the domains 11, 12, 13, 14.
- the magnitudes of the magnetizations of the domains are the same.
- the domains 11, 13 on the off increase the prior art extent to the domains H '', 13 '' zoom.
- the volume fraction of the domains 11 '', 13 '' with the desired direction of magnetization compared to the domains 11, 13 significantly higher, while the volume fraction of the perpendicular thereto and thus unfavorably aligned domains 12, 14 in comparison with the domains 12 ", 14" is significantly lower.
- FIGS. 2 a) to c the influence of the increasing length of each individual slot 20, 20 ', 20 "on the magnetization in the ferromagnetic layer is shown. It can be seen that the volume fraction of parallel to the longitudinal axis of the respective one slot 20, 20 ', 20''arranged and thus favorably oriented areas increases increasingly and thus simultaneously the volume fraction of perpendicular to the longitudinal axis of each slot 20, 20' , 20 '' arranged and thus unfavorably oriented areas correspondingly reduced. The same effect is observed when, as shown in FIGS. 2 d) to f), the number of parallel slits of 20, 21 over 20 ', 21', 22 'to 20''',21'',22'',23''increases.
- FIG. 3 various geometries are schematically illustrated with inventively arranged slots.
- Fig. 3a shows a u-niaxiale arrangement with seven slots 20 to 26 oriented parallel to each other
- Fig. 3b a triangular arrangement with a tri-directional slot 30, each occupy an angle of approximately 120 ° to each other
- Fig. 3c an annular arrangement with a plurality of slots 20, 21, etc. is shown, whose longitudinal axes are each arranged radially on the center 40 of a circle defined by the sides of the ring.
- Fig. 4 shows schematically an example of an arrangement of different slots according to the invention. Such an arrangement shows the adjustability of magnetic domains in arbitrary geometries.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Thin Magnetic Films (AREA)
- Hall/Mr Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005015745A DE102005015745A1 (de) | 2005-04-06 | 2005-04-06 | Ferro- oder ferrimagnetische Schicht, Verfahren zu ihrer Herstellung und ihre Verwendung |
| PCT/EP2006/002756 WO2006105877A1 (de) | 2005-04-06 | 2006-03-25 | Ferro- oder ferrimagnetische schicht, verfahren zu ihrer herstellung und ihre verwendung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1866940A1 true EP1866940A1 (de) | 2007-12-19 |
| EP1866940B1 EP1866940B1 (de) | 2016-08-03 |
Family
ID=36589196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06723734.7A Expired - Lifetime EP1866940B1 (de) | 2005-04-06 | 2006-03-25 | Ferro- oder ferrimagnetische schicht, verfahren zu ihrer herstellung und ihre verwendung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7642098B2 (de) |
| EP (1) | EP1866940B1 (de) |
| JP (1) | JP5289938B2 (de) |
| KR (1) | KR20070117619A (de) |
| DE (1) | DE102005015745A1 (de) |
| WO (1) | WO2006105877A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2701558A1 (de) * | 1977-01-15 | 1978-07-20 | Vogt Gmbh & Co Kg | Ringkern aus ferrit fuer drosselspulen mit nichtlinearem verlauf der permeabilitaet |
| JP3109839B2 (ja) * | 1990-12-21 | 2000-11-20 | 日本電信電話株式会社 | 高周波用薄膜トランス |
| JPH05234759A (ja) * | 1992-02-24 | 1993-09-10 | Tokin Corp | 薄膜インダクタ及びその製造方法 |
| JP3392444B2 (ja) * | 1992-09-30 | 2003-03-31 | 株式会社東芝 | 磁性人工格子膜 |
| JP3290828B2 (ja) * | 1994-09-16 | 2002-06-10 | 株式会社東芝 | 薄膜インダクタンス素子およびその製造方法 |
| FR2773632B1 (fr) * | 1998-01-12 | 2000-03-31 | Centre Nat Rech Scient | Procede de gravure magnetique, pour notamment l'enregistrement magnetique ou magneto-optique |
| JP2000114047A (ja) * | 1998-10-07 | 2000-04-21 | Alps Electric Co Ltd | 薄膜トランス及び薄膜トランスの製造方法 |
| JP3230514B2 (ja) * | 1999-03-19 | 2001-11-19 | 日本電気株式会社 | 磁性配線 |
| US7724558B1 (en) * | 1999-03-19 | 2010-05-25 | Nec Corporation | Magnetic signal transmission line |
| FR2811135B1 (fr) | 2000-06-29 | 2002-11-22 | Memscap | Microcomposant du type micro-inductance ou microtransformateur |
| DE10062400C2 (de) * | 2000-12-14 | 2003-07-24 | Daimler Chrysler Ag | Flexible Induktive Bauelemente für Leiterfolien |
| DE10102367B4 (de) * | 2001-01-19 | 2004-04-15 | Siemens Ag | Datenübertragungseinrichtung zur galvanisch getrennten Signalübertragung und Verwendung der Einrichtung |
| JP2003347124A (ja) * | 2002-05-27 | 2003-12-05 | Matsushita Electric Ind Co Ltd | 磁性素子およびこれを用いた電源モジュール |
| JP4431302B2 (ja) * | 2002-06-05 | 2010-03-10 | 財団法人電気磁気材料研究所 | 磁区制御された軟磁性薄膜フィルムおよびその製造方法ならびに高周波磁気デバイス |
-
2005
- 2005-04-06 DE DE102005015745A patent/DE102005015745A1/de not_active Ceased
-
2006
- 2006-03-25 US US11/910,633 patent/US7642098B2/en not_active Expired - Fee Related
- 2006-03-25 WO PCT/EP2006/002756 patent/WO2006105877A1/de not_active Ceased
- 2006-03-25 KR KR1020077022393A patent/KR20070117619A/ko not_active Withdrawn
- 2006-03-25 JP JP2008504648A patent/JP5289938B2/ja not_active Expired - Fee Related
- 2006-03-25 EP EP06723734.7A patent/EP1866940B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006105877A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006105877A1 (de) | 2006-10-12 |
| JP5289938B2 (ja) | 2013-09-11 |
| JP2008537329A (ja) | 2008-09-11 |
| DE102005015745A1 (de) | 2006-10-12 |
| EP1866940B1 (de) | 2016-08-03 |
| US7642098B2 (en) | 2010-01-05 |
| US20080160333A1 (en) | 2008-07-03 |
| KR20070117619A (ko) | 2007-12-12 |
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