JPS5946079A - Magnetoresistance effect element - Google Patents

Magnetoresistance effect element

Info

Publication number
JPS5946079A
JPS5946079A JP57156975A JP15697582A JPS5946079A JP S5946079 A JPS5946079 A JP S5946079A JP 57156975 A JP57156975 A JP 57156975A JP 15697582 A JP15697582 A JP 15697582A JP S5946079 A JPS5946079 A JP S5946079A
Authority
JP
Japan
Prior art keywords
thin film
circuit
patterns
turn
film circuit
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.)
Pending
Application number
JP57156975A
Other languages
Japanese (ja)
Inventor
Kenichi Ao
建一 青
Yoshi Yoshino
吉野 好
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP57156975A priority Critical patent/JPS5946079A/en
Publication of JPS5946079A publication Critical patent/JPS5946079A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N50/00Galvanomagnetic devices
    • H10N50/10Magnetoresistive devices

Landscapes

  • Hall/Mr Elements (AREA)

Abstract

PURPOSE:To contrive to stabilize the characteristic of the titled element by a method wherein high melting point metal thin films hard to generate an alloy or an intermetallic compound mutually are interposed between ferromagnetic material thin film circuit patterns on an insulating substrate and Al metal circuit patterns in relation thereto. CONSTITUTION:The Al circuit patterns 15 are evaporated in the prescribed form on an SiO2 film 14 on an Si substrate 12, the ferromagnetic material thin film circuits 17 according to the patterns 11a, 11b of an Ni-Co alloy are evaporated interposing Ti films 16 between them, and are protected by SiO2 layers 18. The Al patterns 15 are protruded at the parts corresponding to lead out electrodes 13a-13c, and openings 19 are formed in the SiO2 layers 18 to be made as the electrode lead out parts. According to this construction, the element can be prevented surely from growth of the Ni-Al intermetallic compound when a heat treatment is performed for improvement of the ohmic property, junction intensity of the patterns 15, 17 becomes to about 5 times, the magnetoresistance effect is enhanced by about 30%, and moreover the characteristic is extremely stabilized.

Description

【発明の詳細な説明】 この発+++lII、イ)1(気IJt;抗特性がより
安定して設定ネれる。Lつ改良しまた磁気抵抗う;内果
素子に関する7、 磁電変1(ハ素−rの中で、磁気抵抗効果を利用した磁
気抵抗効果素子は、比較的安定した磁気−電気変換する
ことで知られている。この磁気抵抗効果素子は、磁界を
印加することで電気抵抗が変化する固体素子で構成する
ものであり、その材料とし又はN1−Co系あるいはN
1−Fe糸の強磁性材料が用いられる。
[Detailed Description of the Invention] This development +++ lII, a) 1 (IJt; resistance characteristics can be set more stably. -r, magnetoresistive elements that utilize the magnetoresistive effect are known to perform relatively stable magneto-electrical conversion.This magnetoresistive element changes electrical resistance by applying a magnetic field. It is composed of a solid-state element that changes, and its material may be N1-Co or N
A ferromagnetic material of 1-Fe thread is used.

すなわち、絶縁性基板の主面に対して、」二記強磁性材
料でなる薄膜を蒸着等により形成し、この蒸着薄膜をホ
トレゾストとエツチング技法を利用して、llr定の磁
界に交差する直線部を有する回路・やターンを形成する
ことに7しって構成される。この回路i9ターンd1、
印加された磁界の強さに対応して抵抗値の変化する磁気
抵抗効果を有するものであり、その抵抗回路の両端に対
応して形成される電流取り出し用電極を介して、磁界方
向に感知した電気的用カイi<号を++Vり出すように
なるものである。
That is, on the main surface of an insulating substrate, a thin film made of the ferromagnetic material mentioned above is formed by vapor deposition or the like, and this vapor-deposited thin film is formed using photoresist and etching techniques to form linear sections that intersect with a constant llr magnetic field. It is constructed in accordance with the concept of forming circuits and turns having 7 parts. This circuit i9 turn d1,
It has a magnetoresistive effect in which the resistance value changes in response to the strength of the applied magnetic field, and the current is sensed in the direction of the magnetic field through current extraction electrodes formed corresponding to both ends of the resistance circuit. It is designed so that the electrical chi<< is raised by ++V.

この場合、」二記電流取り出し用の電極は、磁気抵抗体
となる強磁性材料でなる薄膜回路・Pターンと同様に、
絶縁性基板の主面上に蒸着によシ形成されるものであり
、電(版と回路パターンとの接続部は、薄膜回路・やタ
ーン蒸着層と、電極蒸着層とが積層形成される状態とな
る。ここで、電極材料としては、例えにじアルミニウム
が使用されるものであり、したがってオーミック性改善
の7に−めに回路・やターンと電本恢との積層部が熱処
理づれた場合、その積層部においてN1−A/= 系金
属間化合物が生成される。このため、磁気抵抗3回路・
ぞターンとツバ。出f+3.4仮との接続部分は脆くな
るものであp1凍だこの部分の抵抗値が増大して磁気抵
抗効果特性の低下現象を起すようになる1、 この発明tよ上記のような点に鑑みなされたもので、オ
ーミック性改善等のだめに熱処理を施した場合でも、猶
に磁気抵抗回路/’Pクーンと電イ報材料との間に不要
な合金あるいは金属間化合物が生ずることなく、磁気]
1(抗効里上CJ:もとより機械的強匣においても不帰
な間h′■が発生しないようにする、安定した磁気[1
(抗!1’!J’性の設定し得る磁気抵抗効果素子を提
供しようとするものである。
In this case, the electrode for taking out the current described in "2" is similar to the thin film circuit/P-turn made of a ferromagnetic material that becomes the magnetoresistive element.
It is formed by vapor deposition on the main surface of an insulating substrate, and the connection between the electrical plate and the circuit pattern is formed by laminating a thin film circuit/turn vapor deposited layer and an electrode vapor deposited layer. Here, for example, rainbow aluminum is used as the electrode material, and therefore, in order to improve the ohmic property, if the laminated part of the circuit/turn and the electric conductor is heat treated. , an N1-A/= system intermetallic compound is generated in the laminated part.For this reason, the magnetoresistive three circuits
Turn and spit. The connection part with the output f+3.4 becomes brittle, and the resistance value of the p1 frozen part increases, causing a phenomenon of deterioration of the magnetoresistive effect characteristics1.This invention has the above points. This was done in consideration of the above, and even if heat treatment is applied to improve ohmic properties, unnecessary alloys or intermetallic compounds will not be formed between the magnetoresistive circuit/'P Kuhn and the telegraph material. Magnetism]
1 (Resistance effect Rigami CJ: Stable magnetism [1
(This is an attempt to provide a magnetoresistive element that can have anti-!1'!J' properties.

すなわち、この発明に係る磁気抵抗効果素子は、絶縁性
基板上に形成される強磁性月別でなる薄膜回路・9ター
ンと、この回路・2ターンに対応して形成される”アル
ミニウム基金4でなる導電体回路パターンとの間に、両
回路・ギターンの材料相互で合金あるいは金属間化合物
を生成し離い高融点金属薄膜層を介在形成゛する1うに
したものでるる。
That is, the magnetoresistive element according to the present invention consists of a thin film circuit consisting of 9 turns of ferromagnetic metal formed on an insulating substrate, and an aluminum base 4 formed corresponding to the 2 turns of this circuit. There is one in which an alloy or an intermetallic compound is formed between the materials of both the circuits and the guitar, and a high melting point metal thin film layer is interposed between the conductor circuit pattern and the conductive circuit pattern.

以下図面を参照してこの発明の一実施例を酸、明する。An embodiment of the present invention will be explained below with reference to the drawings.

第1図は磁気抵抗効果素子の(rr<気抵抗効果を有す
る回路・ぞターンの状態余水すもので、それぞれ直交す
る第1および第2の方向に延びる複数の直線部を折り返
し接続する構造の第1および第2の回路]9ターンIl
a、Ilbが基板12上に平面的に配置されるように設
定される。そして、この第1および第2の回路ノPター
ン111L、11bの一端部は、電極13aで共通に接
続され、寸だ回路パターンlla、llbのそれぞれ他
端部には電4& J 3 b 、 13cが接続形成さ
れるようになっている2、 第2図は第1図のA −A +Ii!およびn−n紳に
対応する断面構法を示゛1ものび、シリコンウ′「−バ
ーでなる基板12の一方の−1:而には、rR化シリコ
ン(S 102)による絶縁層14を全面にわたり形成
J−る。そして、この絶縁層I4」にr)I・ミニラム
蒸着によって導電体回路・Pターン1 、li 6形成
する。この回路ノ4ターン75 it:第1図(1−示
した電w1.13a〜13Cに対I、)1、し7、さC
)に第1および第2の回路・ぞターンIla、llbの
、それぞれ斜線で示す折り返し+’il(にit IF
、、[7てμシ′Iト′される。そして、この導電体回
111′マ・Pターン75上に、高融点の例えシ1:チ
タン(Ti)による金属薄膜M16を形成4°る。そし
て、この金属薄膜層I6を含む絶縁層14上に、イ1,
1図に第11−・よび第2の回路・!ターンII^、I
lbとして示しだように、N1−Cof¥金による強磁
性体でなる簿l1g回路・ぞターン17ケ蒸着形11ν
する。−ア: l、、 f 。
Figure 1 shows the state of a magnetoresistive element (rr<circuit with a resistance effect), which has a structure in which a plurality of linear parts extending in the first and second directions, which are orthogonal to each other, are folded back and connected. ] 9 turns Il
a, Ilb are set to be arranged on the substrate 12 in a plane. One ends of the first and second circuit P turns 111L, 11b are commonly connected by an electrode 13a, and the other ends of the circuit patterns lla, llb are connected with electric currents 4&J3b, 13c. 2, FIG. 2 shows A −A +Ii! of FIG. 1. The cross-sectional construction method corresponding to the and n-n dimensions is shown. Then, on this insulating layer I4, a conductor circuit, P-turns 1 and 6, are formed by I/minilam evaporation. 4 turns of this circuit 75 it: Fig. 1 (1-I for the shown voltages w1.13a to 13C,) 1, 7, and C
), the first and second circuit turns Ila and llb are respectively indicated by diagonal lines +'il (it IF
. Then, a metal thin film M16 made of titanium (Ti) having a high melting point is formed on this conductor turn 111' M/P turn 75. Then, on the insulating layer 14 including the metal thin film layer I6, I1,
Figure 1 shows the 11th- and second circuits! Turn II^, I
As shown in lb, the circuit made of ferromagnetic material made of N1-Cof\gold has 17 turns and is evaporated type 11ν.
do. -A: l,, f.

回路ノPり・−ン17」−を、酸化シリコン(Sir)
2)による保護層18で被覆して、磁気抵抗効果素子を
完成する。
The circuit board 17 is made of silicon oxide (Sir).
2) is coated with the protective layer 18 to complete the magnetoresistive element.

この場合、第2図の(R)に取り出して示すように、導
出電極1 、? a〜13bに対応する部分においては
、アルミニウムによる回路ノ9ターン15を他の回路・
母ターン部から突出Hψ定するノー共に、保獲層18に
回路パターン15を露出1イ)開口19を形成して、電
極導出部とする。
In this case, as shown in FIG. 2 (R), the lead-out electrodes 1, ? In the parts corresponding to a to 13b, the aluminum circuit 9 turns 15 are connected to other circuits.
1) Expose the circuit pattern 15 on the retention layer 18 at both sides of the hole protruding from the main turn part and form an opening 19 to serve as an electrode lead-out part.

すなわち、E Feのように構成される磁気抵抗効果素
子におい−G、?71.電休回路・Pターン1.51r
よ強磁性薄膜回路17の導出電極として作用−するもの
であり、また強磁性体薄膜回路・Pり・−ン17の直線
部分を接続する折り返し7部な短A’ii シで、直線
部Qて交差する磁界の検1]冒時性が効果的に設定され
るようにし、−1いる。
That is, in a magnetoresistive element configured like E Fe -G,? 71. Electric suspension circuit/P turn 1.51r
It acts as a lead-out electrode of the ferromagnetic thin film circuit 17, and is a short 7-part folded part A'ii which connects the straight parts of the ferromagnetic thin film circuit 17, and the straight part Q. Detection of magnetic fields that intersect with each other so that the time delay is effectively set to -1.

そして、金属薄膜層16C」1、Ni−Co合金でなる
強磁性薄膜回路・やターフ17と、アルミニウムでなる
導電体回路/Pターン15との間に、N1−At金属間
化合物生成防止用の薄膜回路・ぐターンとして作用する
ものである。
Then, between the metal thin film layer 16C''1, the ferromagnetic thin film circuit/turf 17 made of Ni-Co alloy, and the conductive circuit/P turn 15 made of aluminum, a layer for preventing the formation of N1-At intermetallic compounds is provided. It acts as a thin film circuit.

上記実施例では、基板12の絶縁H4141・に導電体
・やターン15を寸ず形成するように(/ンが、第3図
に示すように絶れ層14七に寸ず強磁性薄膜回H,v、
 、e 、p  7171)t’、;I+’j L−1
と(1) 回路・?ターン17の′[1イ、掩形成部、
式ら(r−折り1反(71σ絡部に対応してpHhff
−の金属t’q膜層16を形成(2て、この金属′R膜
層16+にiI、伜を含むフff γ打5体回路ノやタ
ーン15を形成する、1.う(・〆二し7てもよl、/
1 、、この場合、これら回路・Pり・−ンWけ、ホト
17.ノストとエツヂング技ン井を・1史Iff j、
て形成ずtl(1よいもので、その他このような化学エ
ツチング(i化工て、デラズマドライエツチノグト〃て
等適n使用できるものである。
In the above embodiment, the conductive material and the turns 15 are formed on the insulating layer 141 of the substrate 12 (as shown in FIG. 3). ,v,
, e , p 7171) t', ;I+'j L-1
and (1) circuit? Turn 17'[1a, cover formation part,
Equation (1 r-fold (corresponding to the 71σ junction)
- forming the metal t'q film layer 16 (2) forming the fff γ-stroke five-body circuit and turns 15 including iI, 传 on this metal 'R film layer 16+; Shi7 moyo l, /
1. In this case, these circuits, circuits, and photo 17. Nost and etching technique well・1st history Iff j,
However, other such chemical etching methods such as derasma dry etching, etc. can also be used.

尚、この第3図では保8隻層t1、省略しで示している
もので、2P、2図で示l−たと回(〕′;にr(lo
g等による保時層で波榎することQlも1.ろんで才・
ろ。
In addition, in this Figure 3, the 8th protection vessel layer t1 is omitted, and r(lo
Ql is also 1. Londe talented
reactor.

ここで、N1−八を金属間化含物牛成防11一層として
作用する全屈薄膜層15とし−て111−1′−ζ/l
ii gllで示したT1の仙に、タンタノi(’「r
tl、モリグフ゛ン(11:+ )タングステン(4)
等のニラ々I1. (LJi )とアルミ7ウノ、(A
Z)との合金あるいは金1・+(間化合!吻を生1i!
、 l−。
Here, N1-8 is assumed to be 111-1'-ζ/l as the total bending thin film layer 15 acting as one layer of the intermetallic inclusion layer 11.
ii Tantano i ('"r
tl, molywood (11:+) tungsten (4)
Chives such as I1. (LJi) and Aluminum 7 Uno, (A
Alloy with Z) or gold 1.+ (interfusion! Raw 1i!
, l-.

難い高融点金属が適宜選定される0、 すなわち、Nl系の強磁性ドI膜回路・Pターン17と
At系の導電体回路・マター715との間に、′「l、
Ta、 Mo、 W等の高融点金属薄膜層を介在させる
ことによって、オーミック性改善の熱処理に際してNi
−At系金属間化合物11!成を71θ゛実に防1Fで
きるものであり、回路・Pターン17と15との接合部
における強度、磁気抵抗効果4..11性が効果的に改
善できる。第1表tまNi−Co合金とAtとを直接積
層した場合と、N1−Co、 T”l、AtのE層構造
とした場合を対比して示−す。
In other words, between the Nl-based ferromagnetic de-I film circuit/P turn 17 and the At-based conductive circuit/matter 715, a metal with a high melting point is appropriately selected.
By interposing a high melting point metal thin film layer such as Ta, Mo, W, etc., Ni
-At-based intermetallic compound 11! It can actually prevent the formation of 71θ by 1F, and the strength and magnetoresistive effect at the junction between the circuit and P-turns 17 and 15 can be reduced. .. 11 can be effectively improved. Table 1 shows a comparison between a case where a Ni--Co alloy and At are directly laminated and a case where an E-layer structure of N1-Co, T"l, and At is formed.

以」二のようにこの発明によれば、I[¥に強磁性薄膜
回路・やターンと、電極を含むAt導電体薄膜回路・k
ターンとの接合部において、その強度を約5倍にも高め
ることができ、まだ磁気抵抗効果を30チ程度も向上さ
せ/、?−とのできるイ、のであり、非常に安51!シ
たlh’ PIのイ1゛6【気、 [11,抗グ11甲
、卓子を構成うることの′CきるもT71−0で17)
2.
According to the present invention, as described in ``2'', a ferromagnetic thin film circuit and a turn and an At conductive thin film circuit including an electrode are connected to I[\].
At the junction with the turn, the strength can be increased by about 5 times, and the magnetoresistive effect can still be improved by about 30 inches. - It's possible to do it, and it's very cheap 51! Shita lh'PI's I1゛6 [Ki, [11, antig 11A, the 'C that can form the table is also 17 in T71-0)
2.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の=TノIIi I’ll iτ−(
、Yる(1(2気坤4′1″1効果素子を示4゛1′向
図、第21・7つ−2)(^) m)Ir1、ぞ江そ′
れtP、1図のA−A糾およびB−B純にri’、1つ
断面図、第3図t」、この発jj11の他の′J′bj
噸1イク115−示す1111而図である。
Figure 1 shows =TnoIIi I'll iτ-(
, Yru (1 (2 Kikon 4'1''1 effect element shown 4'1' direction view, 21st/7th-2) (^) m) Ir1, Zoeso'
tP, A-A in Figure 1 and B-B pure ri', one cross section, Figure 3 t', other 'J'bj of this origin jj11
噸 1 Iku 115 - 1111 diagram showing.

Claims (1)

【特許請求の範囲】[Claims] 絶縁性基板の主面に形成される磁気抵抗効果を有する強
磁性材料でなる薄膜回路パターンと、この回路・Pター
ンの一部に対応して形成され導出電極としても使用しイ
(jるように形成したアルミニウム系導電体薄膜回路パ
ターンと、この導電体簿膜回路・?ターンと」ユ記強磁
性薄膜回路・!ターンとの間にA−(層する状態で介在
して形成された上記磁性側石および導115月料と0合
金あるいOよ金属間化合物が形成し幡い高融点金石薄膜
とを具(Ii++ L /rことを特徴とする磁気抵抗
効!′f:素子。
A thin film circuit pattern made of a ferromagnetic material having a magnetoresistive effect is formed on the main surface of an insulating substrate, and a thin film circuit pattern is formed corresponding to a part of this circuit/P-turn and can also be used as a lead-out electrode. The aluminum-based conductor thin film circuit pattern formed on the ferromagnetic thin film circuit ?turn and the ferromagnetic thin film circuit !turn formed on the ferromagnetic thin film circuit ! A magnetoresistive element characterized by a magnetic side stone, a conductive material, and a thin film of high melting point gold formed by an alloy or an intermetallic compound (Ii++ L/r).
JP57156975A 1982-09-09 1982-09-09 Magnetoresistance effect element Pending JPS5946079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57156975A JPS5946079A (en) 1982-09-09 1982-09-09 Magnetoresistance effect element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57156975A JPS5946079A (en) 1982-09-09 1982-09-09 Magnetoresistance effect element

Publications (1)

Publication Number Publication Date
JPS5946079A true JPS5946079A (en) 1984-03-15

Family

ID=15639417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57156975A Pending JPS5946079A (en) 1982-09-09 1982-09-09 Magnetoresistance effect element

Country Status (1)

Country Link
JP (1) JPS5946079A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377370U (en) * 1986-11-07 1988-05-23
JPH01125882A (en) * 1987-08-21 1989-05-18 Nippon Denso Co Ltd Magnetism detector
US5262666A (en) * 1989-05-15 1993-11-16 Nippondenso Co., Ltd. Semiconductor device with a nickel alloy protective resistor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126187A (en) * 1981-01-28 1982-08-05 Hitachi Ltd Reluctance element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126187A (en) * 1981-01-28 1982-08-05 Hitachi Ltd Reluctance element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377370U (en) * 1986-11-07 1988-05-23
JPH0445263Y2 (en) * 1986-11-07 1992-10-23
JPH01125882A (en) * 1987-08-21 1989-05-18 Nippon Denso Co Ltd Magnetism detector
US5262666A (en) * 1989-05-15 1993-11-16 Nippondenso Co., Ltd. Semiconductor device with a nickel alloy protective resistor

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