JPH1081961A - Sputtering target - Google Patents

Sputtering target

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Publication number
JPH1081961A
JPH1081961A JP23671996A JP23671996A JPH1081961A JP H1081961 A JPH1081961 A JP H1081961A JP 23671996 A JP23671996 A JP 23671996A JP 23671996 A JP23671996 A JP 23671996A JP H1081961 A JPH1081961 A JP H1081961A
Authority
JP
Japan
Prior art keywords
sputtering
target
composition
hours
thin film
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
JP23671996A
Other languages
Japanese (ja)
Inventor
Jiro Nakanishi
次郎 中西
Yuji Takatsuka
裕二 高塚
Toshio Morimoto
敏夫 森本
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.)
Sumitomo Metal Mining Co Ltd
Original Assignee
Sumitomo Metal Mining 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 Sumitomo Metal Mining Co Ltd filed Critical Sumitomo Metal Mining Co Ltd
Priority to JP23671996A priority Critical patent/JPH1081961A/en
Publication of JPH1081961A publication Critical patent/JPH1081961A/en
Pending legal-status Critical Current

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  • Manufacturing Optical Record Carriers (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a sputtering target capable of easily obtaining an targeted thin coating compsn. in the formation of Te-Ge-Sb series thin coating. SOLUTION: This sputtering target is the one composed of a compound or an alloy at least composed of the elements of Te, Ge and Sb, and in which in the case the contents of Te, Ge and Sb are defined as TexGeySbz, and to the objective contents Tex0 Gey0 Sbz0 in the thin coating to be formed, y= A.x.y0 /x0 and z=B.x.z0 /x0 (at.% in all cases) are satisfied, they have relation in which both A and B lie within the range of 0.82 to 0.94. In this constitution, the density of the formed body is regulated to >=85% of the true density as well.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はスパッタリングター
ゲットに関し、より詳しくは、目標組成に近い組成を有
する薄膜を容易に得ることができる、例えば情報記録薄
膜形成用に用いられるスパッタリングターゲットに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sputtering target, and more particularly to a sputtering target which can easily obtain a thin film having a composition close to a target composition, for example, used for forming an information recording thin film.

【0002】[0002]

【従来の技術】Te、Ge、Sbを含む合金は、相変化
型光ディスクの記録媒体薄膜層に好適な素材として実用
化されており(特開昭62−53886号公報等)、通
常、その薄膜作製にはスパッタリング法が用いられる。
2. Description of the Related Art Alloys containing Te, Ge, and Sb have been put to practical use as a material suitable for a recording medium thin film layer of a phase change optical disk (Japanese Patent Application Laid-Open No. Sho 62-53886). A sputtering method is used for fabrication.

【0003】Te−Ge−Sb系の薄膜をスパッタリン
グ法によって作製する場合、ターゲット組成と得られた
薄膜組成には「ずれ」が生じてしまう。例えば、特開昭
64−62466号公報によれば、長時間にわたって目
標とする薄膜組成を均一に得るためには、充填率が80
%以上の成形体より成り、ターゲットにおけるTe、G
e、Sbの含有率をTexGeySbz(x、y、zの
単位はat%)とし、形成する薄膜の目標とする含有率
をTex0Gey0Sbz0(x0、y0、z0の単位はat
%)とするとき、以下の2式 y=A・x・y0/x0、 z=B・x・z0/x0 において、Aが1.05〜1.15、Bが0.9〜1.
0の範囲内にあることが好ましいとされていた。
[0003] When a Te-Ge-Sb-based thin film is formed by a sputtering method, a "deviation" occurs between the target composition and the obtained thin film composition. For example, according to JP-A-64-62466, in order to obtain a target thin film composition uniformly over a long period of time, a filling rate of 80% is required.
% Of the compact, and Te, G in the target
The content of e and Sb is TexGeySbz (the unit of x, y and z is at%), and the target content of the thin film to be formed is Tex 0 Gey 0 Sbz 0 (x 0 , y 0 and z 0 are in units of at
%), When the following two expressions are used, y = A · x · y 0 / x 0 and z = B · x · z 0 / x 0 , A is 1.05 to 1.15, and B is 0.9 ~ 1.
It has been considered preferable to be within the range of 0.

【0004】[0004]

【発明が解決しようとする課題】しかし、本発明者らの
研究の結果、特開昭64−62466号公報で示された
組成範囲でスパッタリングを行うと、目標とする薄膜組
成が得られないことが明らかになった。この原因は明ら
かではないが、ターゲットの作製条件によってターゲッ
ト表面からの原子の放出機構が異なる、あるいはTeの
蒸気圧がGe、Sbの蒸気圧よりも高いためスパッタリ
ング中にTe原子がチェンバー側面へ拡散してしまうな
どが考えられる。
However, as a result of the study of the present inventors, it has been found that a desired thin film composition cannot be obtained when sputtering is carried out in the composition range disclosed in Japanese Patent Application Laid-Open No. 64266/1988. Was revealed. Although the cause is not clear, the mechanism of releasing atoms from the target surface differs depending on the target manufacturing conditions, or Te atoms diffuse to the side of the chamber during sputtering because the vapor pressure of Te is higher than the vapor pressures of Ge and Sb. And so on.

【0005】そこで本発明は、Te−Ge−Sb系薄膜
の作製において、目標の薄膜組成を容易に得ることがで
きるスパッタリングターゲットを提供することを目的と
する。
Accordingly, an object of the present invention is to provide a sputtering target capable of easily obtaining a target thin film composition in producing a Te—Ge—Sb-based thin film.

【0006】[0006]

【課題を解決するための手段】上記目的を解決するため
の本発明のスパッタリングターゲットは、少なくともT
e、Ge、Sbの元素からなる化合物または合金より構
成され、Te、Ge、Sbの含有率をTexGeySb
z(x、y、zはat%)として、形成する薄膜の目標
とする含有率Tex0Gey0Sbz0(x0、y0、z0
at%)に対して、 y=A・x・y0/x0 ・・・式1 z=B・x・z0/x0 ・・・式2 とするとき、A、Bがともに0.82〜0.94の範囲
内にある関係を有して構成されることを特徴とする。ま
た、本発明の他のスパッタリングターゲットは、上記構
成で更に、成形体密度が真密度の85%以上であること
を特徴とする。
In order to achieve the above object, the present invention provides a sputtering target having at least T
e, Ge, and Sb, which are composed of compounds or alloys. The content of Te, Ge, and Sb is determined by TexGeySb
As z (x, y, z are at%), a target content Tex 0 Gey 0 Sbz 0 (x 0 , y 0 , z 0 is at%) of a thin film to be formed, y = A · x · Y 0 / x 0 ··· Equation 1 z = B · x · z 0 / x 0 ··· Equation 2 When A and B are both within the range of 0.82 to 0.94, It is characterized by having it. Further, another sputtering target of the present invention is characterized in that, in the above configuration, the compact density is 85% or more of the true density.

【0007】[0007]

【発明の実施の形態】本発明の構成により、目標とする
薄膜組成を均一に得ることができる。式中のA、Bを
0.82〜0.94の範囲に規定したのは、この範囲外
であると得られるTe−Ge−Sb系薄膜の組成が所望
の組成にならないからである。また、本発明でターゲッ
トの成形体密度を真密度の85%以上とするのは、もし
85%未満であるとスパッタリング中にターゲットが冷
却板(バッキングプレート)から脱落してしまう可能性
があるからである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the constitution of the present invention, a target thin film composition can be obtained uniformly. The reason for defining A and B in the formula in the range of 0.82 to 0.94 is that the composition of the obtained Te—Ge—Sb-based thin film will not be a desired composition if it is outside this range. In addition, the reason why the target density is set to 85% or more of the true density in the present invention is that if the density is less than 85%, the target may fall off the cooling plate (backing plate) during sputtering. It is.

【0008】[0008]

【実施例】以下、本発明の実施例を説明する。 実施例1 ・・・ Te−Ge−Sb薄膜の目標組成を
Te55.6Ge22.2Sb22.2とする場合(い
ずれもat%、以下同じ。)、式1、式2において、x
0=55.6、y0=22.2、z0=22.2であるの
で、ターゲットの組成TexGeySbzのx、y、z
を次のように決定した。
Embodiments of the present invention will be described below. Example 1 When the target composition of the Te—Ge—Sb thin film is Te55.6Ge22.2Sb22.2 (all at%, the same applies hereinafter), x in Expressions 1 and 2
Since 0 = 55.6, y 0 = 22.2, and z 0 = 22.2, x, y, z of the target composition TexGeySbz
Was determined as follows.

【0009】 y=0.91・x・y0/x0=0.91・22.2x/55.6 ・・式3 z=0.89・x・z0/x0=0.89・22.2x/55.6 ・・式4 x+y+z=100 ・・式5 式3〜式5の連立方程式を解くと、x=58.2at
%、y=21.1at%、z=20.7at%が得ら
れ、Te58.2Ge21.1Sb20.7(at%)
の組成であるターゲットを作製することになる。
Y = 0.91 · x · y 0 / x 0 = 0.91 · 22.2x / 55.6 ··· Equation 3 z = 0.89 · x · z 0 / x 0 = 0.89 · 22.2x / 55.6 Expression 4 x + y + z = 100 Expression 5 When the simultaneous equations of Expressions 3 to 5 are solved, x = 58.2 at.
%, Y = 21.1 at%, z = 20.7 at%, and Te58.2Ge21.1Sb20.7 (at%)
Is produced.

【0010】そこでまず、母合金として純度4N(9
9.99at%)以上のTe、Ge、Sbの各純金属原
料を秤量し、それらの混合物をAr雰囲気中で溶解鋳造
して、Te−Ge−Sb合金鋳塊を得た。この合金鋳塊
をICPで組成分析した結果、Te58.5Ge21.
0Sb20.5(at%)であった。この鋳塊をジョー
クラッシャー、及びアトライターで粉砕し、粒径数十μ
mの原料粉末とした。この原料粉末をφ154mm、厚
さ5mmの成形体になるような黒鉛型に入れ、Ar雰囲
気中で温度450℃、プレス圧力200kgf/cm2
にて2時間の加圧焼結を行った。得られた成形体をIC
Pで組成分析した結果、目標とするターゲット組成とほ
ぼ同様な組成、つまりTe58.4Ge21.3Sb2
0.3(at%)であった。また、この成形体密度は、
その体積と重量より算出した密度測定により、真密度の
86%であった。この成形体を機械加工し、銅板のバッ
キングプレートにボンディングしてターゲットとした。
Therefore, first, as a master alloy, a purity of 4N (9
Pure metal raw materials of not less than 9.99 at%) of Te, Ge, and Sb were weighed, and a mixture thereof was melt-cast in an Ar atmosphere to obtain a Te-Ge-Sb alloy ingot. As a result of composition analysis of this alloy ingot by ICP, Te58.5Ge21.
0Sb was 20.5 (at%). This ingot is pulverized with a jaw crusher and attritor, and the particle size is
m of the raw material powder. This raw material powder is placed in a graphite mold to form a compact having a diameter of 154 mm and a thickness of 5 mm, and a temperature of 450 ° C. and a pressure of 200 kgf / cm 2 in an Ar atmosphere.
For 2 hours under pressure. The obtained molded body is used as an IC
As a result of the composition analysis of P, the composition was substantially the same as the target composition, ie, Te58.4Ge21.3Sb2.
0.3 (at%). Also, the density of this compact is
Density measurement calculated from the volume and weight showed that it was 86% of the true density. This compact was machined and bonded to a copper backing plate to obtain a target.

【0011】このターゲットを1時間プリスパッタした
後、Ar雰囲気中で3mTorrのスパッタ圧力でDC
スパッタおよびRFスパッタを実施した。スパッタパワ
ーはいずれも150Wとした。5時間、10時間および
15時間のスパッタを行って形成した薄膜の組成の、E
PMAによる組成分析結果を表1に示す。これらの値
は、目標とした薄膜組成Te55.6Ge22.2Sb
22.2とほとんど一致している。
After pre-sputtering the target for 1 hour, DC sputtering was performed at a sputtering pressure of 3 mTorr in an Ar atmosphere.
Sputtering and RF sputtering were performed. The sputtering power was 150 W in each case. E of the composition of the thin film formed by performing sputtering for 5 hours, 10 hours, and 15 hours
Table 1 shows the results of composition analysis by PMA. These values correspond to the target thin film composition Te55.6Ge22.2Sb.
Almost coincides with 22.2.

【0012】[0012]

【表1】 スパッタ種 スパッタ時間 薄膜組成 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− DCスパッタ 5時間 Te55.5Ge22.5Sb22.0 10時間 Te55.6Ge22.3Sb22.1 15時間 Te55.8Ge21.8Sb22.4 RFスパッタ 5時間 Te55.1Ge22.4Sb22.5 10時間 Te55.3Ge22.8Sb21.9 15時間 Te55.4Ge22.3Sb22.3Table 1 Sputter type Sputtering time Thin film composition 1.5Sb22.0 10 hours Te55.6Ge22.3Sb22.1 15 hours Te55.8Ge21.8Sb22.4 RF sputtering 5 hours Te55.1Ge22.4Sb22.5 10 hours Te55.3Ge22.8Sb21.9 15 hours Te55.4Ge22.8 3

【0013】実施例2 ・・・ Te−Ge−Sb薄膜
の目標組成をTe52Ge21Sb27とする場合、式
1、式2において、x0=52、y0=21、z0=27
であるので、ターゲットの組成TexGeySbzの
x、y、zを次のように決定した。
Example 2 When the target composition of the Te—Ge—Sb thin film is Te52Ge21Sb27, x 0 = 52, y 0 = 21, and z 0 = 27 in equations 1 and 2.
Therefore, x, y, and z of the composition TexGeySbz of the target were determined as follows.

【0014】 y=0.88・x・y0/x0=0.88・21x/52 ・・式6 z=0.90・x・z0/x0=0.90・27x/52 ・・式7 x+y+z=100 ・・式8 式6〜式8の連立方程式を解くと、x=54.9at
%、y=19.5at%、z=25.6at%が得ら
れ、Te54.9Ge19.5Sb25.6(at%)
の組成であるターゲットを作製することになる。
Y = 0.88 · x · y 0 / x 0 = 0.88 · 21x / 52 Equation 6 z = 0.90 · x · z 0 / x 0 = 0.90 · 27x / 52 Equation 7 x + y + z = 100 Equation 8 When solving the simultaneous equations of Equations 6 to 8, x = 54.9 at.
%, Y = 19.5 at%, z = 25.6 at%, and Te54.9Ge19.5Sb25.6 (at%).
Is produced.

【0015】そこでまず、母合金として純度4N(9
9.99at%)以上のTe、Ge、Sbの各純金属原
料を秤量し、それらの混合物をAr雰囲気中で溶解鋳造
して、Te−Ge−Sb合金鋳塊を得た。この合金鋳塊
をICPで組成分析した結果、Te55.0Ge19.
8Sb25.2(at%)であった。この鋳塊をジョー
クラッシャー、及びアトライターで粉砕し、粒径数十μ
mの原料粉末とした。この原料粉末をφ154mm、厚
さ5mmの成形体になるような黒鉛型に入れ、Ar雰囲
気中で温度530℃、プレス圧力300kgf/cm2
にて2時間の加圧焼結を行った。得られた成形体をIC
Pで組成分析した結果、目標とするターゲット組成とほ
ぼ同様な組成、つまりTe54.7Ge19.2Sb2
6.1(at%)であった。また、この成形体密度は、
その体積と重量より算出した密度測定により、真密度の
98%であった。この成形体を機械加工し、銅板のバッ
キングプレートにボンディングしてターゲットとした。
Therefore, first, as a master alloy, a purity of 4N (9
Pure metal raw materials of not less than 9.99 at%) of Te, Ge, and Sb were weighed, and a mixture thereof was melt-cast in an Ar atmosphere to obtain a Te-Ge-Sb alloy ingot. As a result of composition analysis of this alloy ingot by ICP, Te55.0Ge19.
8Sb25.2 (at%). This ingot is pulverized with a jaw crusher and attritor, and the particle size is
m of the raw material powder. This raw material powder is placed in a graphite mold having a size of φ154 mm and a thickness of 5 mm, and the temperature is 530 ° C. and the pressing pressure is 300 kgf / cm 2 in an Ar atmosphere.
For 2 hours under pressure. The obtained molded body is used as an IC
As a result of the composition analysis of P, the composition was substantially the same as the target composition, ie, Te54.7Ge19.2Sb2.
6.1 (at%). Also, the density of this compact is
The density was calculated from the volume and weight, and was 98% of the true density. This compact was machined and bonded to a copper backing plate to obtain a target.

【0016】このターゲットを1時間プリスパッタした
後、Ar雰囲気中で3mTorrのスパッタ圧力でDC
スパッタおよびRFスパッタを実施した。スパッタパワ
ーはいずれも150Wとした。5時間、10時間および
15時間のスパッタを行って形成した薄膜の組成の、E
PMAによる組成分析結果を表2に示す。これらの値
は、目標とした薄膜組成Te52Ge21Sb27とほ
とんど一致している。
After pre-sputtering the target for 1 hour, DC sputtering was performed at a sputtering pressure of 3 mTorr in an Ar atmosphere.
Sputtering and RF sputtering were performed. The sputtering power was 150 W in each case. E of the composition of the thin film formed by performing sputtering for 5 hours, 10 hours, and 15 hours
Table 2 shows the results of composition analysis by PMA. These values almost coincide with the target thin film composition Te52Ge21Sb27.

【0017】[0017]

【表2】 スパッタ種 スパッタ時間 薄膜組成 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− DCスパッタ 5時間 Te52.1Ge20.9Sb27.0 10時間 Te52.1Ge20.9Sb27.0 15時間 Te52.0Ge20.8Sb27.2 RFスパッタ 5時間 Te51.9Ge21.0Sb27.1 10時間 Te52.1Ge20.9Sb27.0 15時間 Te52.1Ge20.9Sb27.0[Table 2] Sputtering type Sputtering time Thin film composition---------------------------------------DC sputtering 5 hours Te52.1Ge20 9.9Sb27.0 10 hours Te52.1Ge20.9Sb27.0 15 hours Te52.0Ge20.8Sb27.2 RF sputtering 5 hours Te51.9Ge21.0Sb27.1 10 hours Te52.1Ge20.9Sb27.0 15 hours Te52.1Ge20.9Sb27. 0

【0018】実施例3 ・・・ Te−Ge−Sb薄膜
の目標組成をTe68.5Ge9.6Sb21.9とす
る場合(いずれもat%、以下同じ。)、式1、式2に
おいて、x0=68.5、y0=9.6、z0=21.9
であるので、ターゲットの組成TexGeySbzの
x、y、zを次のように決定した。
Example 3 When the target composition of the Te—Ge—Sb thin film is Te68.5Ge9.6Sb21.9 (all at%, the same applies hereinafter), x 0 = Eq. 68.5, y 0 = 9.6, z 0 = 21.9
Therefore, x, y, and z of the composition TexGeySbz of the target were determined as follows.

【0019】 y=0.86・x・y0/x0=0.86・9.6x/68.5 ・・式9 z=0.91・x・z0/x0=0.91・21.9x/68.5 ・・式10 x+y+z=100 ・・式11 式9〜式11の連立方程式を解くと、x=70.9at
%、y=8.5at%、z=20.6at%が得られ、
Te70.9Ge8.5Sb20.6(at%)の組成
であるターゲットを作製することになる。
Y = 0.86 · x · y 0 / x 0 = 0.86 · 9.6x / 68.5 ··· Equation 9 z = 0.91 · x · z 0 / x 0 = 0.91 · 21.9x / 68.5 Equation 10 x + y + z = 100 Equation 11 When solving the simultaneous equations of Equations 9 to 11, x = 70.9 at.
%, Y = 8.5 at%, z = 20.6 at%,
A target having a composition of Te70.9Ge8.5Sb20.6 (at%) will be produced.

【0020】そこでまず、母合金として純度4N(9
9.99at%)以上、粒径数十μm程度のTe、G
e、Sbの各純金属原料を秤量し、それらの混合物をA
r雰囲気中で均一に混合して原料粉末とした。この原料
粉末をφ154mm、厚さ5mmの成形体になるような
黒鉛型に入れ、Ar雰囲気中で温度350℃、プレス圧
力200kgf/cm2にて2時間の加圧焼結を行っ
た。得られた成形体をICPで組成分析した結果、目標
とするターゲット組成とほぼ同様な組成、つまりTe7
0.9Ge8.5Sb20.6(at%)であった。ま
た、この成形体密度は、その体積と重量より算出した密
度測定により、真密度の95%であった。この成形体を
機械加工し、銅板のバッキングプレートにボンディング
してターゲットとした。
First, as a mother alloy, a purity of 4N (9
Te, G having a particle size of about tens μm or more
e, pure metal raw materials of Sb are weighed, and the mixture is
The mixture was uniformly mixed in an r atmosphere to obtain a raw material powder. This raw material powder was placed in a graphite mold to form a compact having a diameter of 154 mm and a thickness of 5 mm, and was subjected to pressure sintering in an Ar atmosphere at a temperature of 350 ° C. and a pressure of 200 kgf / cm 2 for 2 hours. As a result of composition analysis of the obtained molded body by ICP, a composition substantially similar to the target composition of the target, that is, Te7
0.9Ge8.5Sb20.6 (at%). The density of the molded product was 95% of the true density as determined by density measurement calculated from the volume and weight. This compact was machined and bonded to a copper backing plate to obtain a target.

【0021】このターゲットを1時間プリスパッタした
後、Ar雰囲気中で3mTorrのスパッタ圧力でDC
スパッタおよびRFスパッタを実施した。スパッタパワ
ーはいずれも200Wとした。5時間、10時間および
15時間のスパッタを行って形成した薄膜の組成の、E
PMAによる組成分析結果を表1に示す。これらの値
は、目標とした薄膜組成Te68.5Ge9.6Sb2
1.9とほとんど一致している。
After pre-sputtering this target for one hour, DC sputtering was performed at a sputtering pressure of 3 mTorr in an Ar atmosphere.
Sputtering and RF sputtering were performed. The sputtering power was set to 200 W in each case. E of the composition of the thin film formed by performing sputtering for 5 hours, 10 hours, and 15 hours
Table 1 shows the results of composition analysis by PMA. These values correspond to the target thin film composition Te68.5Ge9.6Sb2.
This is almost the same as 1.9.

【0022】[0022]

【表3】 スパッタ種 スパッタ時間 薄膜組成 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− DCスパッタ 5時間 Te68.3Ge9.7Sb22.0 10時間 Te68.3Ge9.5Sb22.2 15時間 Te68.5Ge9.7Sb21.8 RFスパッタ 5時間 Te68.7Ge10.0Sb21.3 10時間 Te68.5Ge9.5Sb22.0 15時間 Te68.3Ge9.6Sb22.1[Table 3] Sputtering type Sputtering time Thin film composition----------------------------------------DC sputtering 5 hours Te68.3Ge9 0.7Sb22.0 10 hours Te68.3Ge9.5Sb22.2 15 hours Te68.5Ge9.7Sb21.8 RF sputtering 5 hours Te68.7Ge10.0Sb21.3 10 hours Te68.5Ge9.5Sb22.0 15 hours Te68.3Ge9.2. 1

【0023】[0023]

【発明の効果】以上説明したように、本発明に基づいて
得られたスパッタリングターゲットを用いてTe−Ge
−Sb系薄膜を形成することにより、目標組成に近い組
成の薄膜を得ることができる。
As described above, Te-Ge is obtained by using the sputtering target obtained according to the present invention.
By forming the -Sb-based thin film, a thin film having a composition close to the target composition can be obtained.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 少なくともTe、Ge、Sbの元素から
なる化合物または合金より構成され、Te、Ge、Sb
の含有率をTexGeySbz(x、y、zはat%)
として、形成する薄膜の目標とする含有率Tex0Ge
0Sbz0(x0、y0、z0はat%)に対して、 y=A・x・y0/x0 z=B・x・z0/x0 とするとき、A、Bがともに0.82〜0.94の範囲
内にある関係を有して構成されることを特徴とするスパ
ッタリングターゲット。
1. A semiconductor device comprising a compound or an alloy composed of at least Te, Ge and Sb, and comprising Te, Ge and Sb.
Of TexGeySbz (x, y, z are at%)
As the target content Tex 0 Ge of the thin film to be formed
For y 0 Sbz 0 (x 0 , y 0 , z 0 is at%), when y = A · x · y 0 / x 0 z = B · x · z 0 / x 0 , A, B Have a relationship within the range of 0.82 to 0.94.
【請求項2】 成形体密度が真密度の85%以上である
特許請求の範囲1に記載のスパッタリングターゲット。
2. The sputtering target according to claim 1, wherein the density of the compact is 85% or more of the true density.
JP23671996A 1996-09-06 1996-09-06 Sputtering target Pending JPH1081961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23671996A JPH1081961A (en) 1996-09-06 1996-09-06 Sputtering target

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23671996A JPH1081961A (en) 1996-09-06 1996-09-06 Sputtering target

Publications (1)

Publication Number Publication Date
JPH1081961A true JPH1081961A (en) 1998-03-31

Family

ID=17004771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23671996A Pending JPH1081961A (en) 1996-09-06 1996-09-06 Sputtering target

Country Status (1)

Country Link
JP (1) JPH1081961A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007131941A (en) * 2006-05-26 2007-05-31 Mitsubishi Materials Corp Method for producing sputtering target for forming phase change film having reduced generation of particle
JP2010236095A (en) * 2002-02-25 2010-10-21 Jx Nippon Mining & Metals Corp Method for producing sputtering target for phase change memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010236095A (en) * 2002-02-25 2010-10-21 Jx Nippon Mining & Metals Corp Method for producing sputtering target for phase change memory
JP2007131941A (en) * 2006-05-26 2007-05-31 Mitsubishi Materials Corp Method for producing sputtering target for forming phase change film having reduced generation of particle

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